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Finding the Fourth Proportional to 538,666.10, 807,999.15 and 314,279.90

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Solution

The fourth proportional to 538,666.10, 807,999.15 and 314,279.90 is: 471,419.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,666.10 : 807,999.15 = 314,279.90 : x
  2. Step 2: Convert to fraction form
    538,666.10/807,999.15 = 314,279.90/x
  3. Step 3: Cross multiply
    538,666.10x = 807,999.15 × 314,279.90
  4. Step 4: Simplify right side
    538,666.10x = 253,937,892,062.09
  5. Step 5: Solve for x
    x = 253,937,892,062.09/538,666.10
  6. Step 6: Final answer
    x = 471,419.85

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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.