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Finding the Fourth Proportional to 538,430.10, 807,645.15 and 314,043.90

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Solution

The fourth proportional to 538,430.10, 807,645.15 and 314,043.90 is: 471,065.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,430.10 : 807,645.15 = 314,043.90 : x
  2. Step 2: Convert to fraction form
    538,430.10/807,645.15 = 314,043.90/x
  3. Step 3: Cross multiply
    538,430.10x = 807,645.15 × 314,043.90
  4. Step 4: Simplify right side
    538,430.10x = 253,636,032,722.09
  5. Step 5: Solve for x
    x = 253,636,032,722.09/538,430.10
  6. Step 6: Final answer
    x = 471,065.85

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Similar ratio
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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.