Home / 1,208,520,089.70-1,812,780,134.55-634,016,768.10

Finding the Fourth Proportional to 1,208,520,089.70, 1,812,780,134.55 and 634,016,768.10

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Solution

The fourth proportional to 1,208,520,089.70, 1,812,780,134.55 and 634,016,768.10 is: 951,025,152.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,520,089.70 : 1,812,780,134.55 = 634,016,768.10 : x
  2. Step 2: Convert to fraction form
    1,208,520,089.70/1,812,780,134.55 = 634,016,768.10/x
  3. Step 3: Cross multiply
    1,208,520,089.70x = 1,812,780,134.55 × 634,016,768.10
  4. Step 4: Simplify right side
    1,208,520,089.70x = 1,149,333,002,183,274,112
  5. Step 5: Solve for x
    x = 1,149,333,002,183,274,112/1,208,520,089.70
  6. Step 6: Final answer
    x = 951,025,152.15

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Half scale
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Double scale
Find fourth proportional to 1,208,520,090.70, 1,812,780,136.05 and 634,016,769.10
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.