Home / 3,119,280.80-4,678,921.20-755,376.80

Finding the Fourth Proportional to 3,119,280.80, 4,678,921.20 and 755,376.80

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Solution

The fourth proportional to 3,119,280.80, 4,678,921.20 and 755,376.80 is: 1,133,065.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119,280.80 : 4,678,921.20 = 755,376.80 : x
  2. Step 2: Convert to fraction form
    3,119,280.80/4,678,921.20 = 755,376.80/x
  3. Step 3: Cross multiply
    3,119,280.80x = 4,678,921.20 × 755,376.80
  4. Step 4: Simplify right side
    3,119,280.80x = 3,534,348,523,508.16
  5. Step 5: Solve for x
    x = 3,534,348,523,508.16/3,119,280.80
  6. Step 6: Final answer
    x = 1,133,065.20

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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.