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Finding the Fourth Proportional to 438,973.32, 657,773.10 and 339,378.96

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Solution

The fourth proportional to 438,973.32, 657,773.10 and 339,378.96 is: 508,537.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,973.32 : 657,773.10 = 339,378.96 : x
  2. Step 2: Convert to fraction form
    438,973.32/657,773.10 = 339,378.96/x
  3. Step 3: Cross multiply
    438,973.32x = 657,773.10 × 339,378.96
  4. Step 4: Simplify right side
    438,973.32x = 223,234,350,593.98
  5. Step 5: Solve for x
    x = 223,234,350,593.98/438,973.32
  6. Step 6: Final answer
    x = 508,537.40

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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.