Home / 1,267,489.80-1,901,234.70-520,072.20

Finding the Fourth Proportional to 1,267,489.80, 1,901,234.70 and 520,072.20

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Solution

The fourth proportional to 1,267,489.80, 1,901,234.70 and 520,072.20 is: 780,108.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267,489.80 : 1,901,234.70 = 520,072.20 : x
  2. Step 2: Convert to fraction form
    1,267,489.80/1,901,234.70 = 520,072.20/x
  3. Step 3: Cross multiply
    1,267,489.80x = 1,901,234.70 × 520,072.20
  4. Step 4: Simplify right side
    1,267,489.80x = 988,779,313,145.34
  5. Step 5: Solve for x
    x = 988,779,313,145.34/1,267,489.80
  6. Step 6: Final answer
    x = 780,108.30

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Double scale
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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.