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Finding the Fourth Proportional to 539,660.28, 744,818.70 and 313,437

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Solution

The fourth proportional to 539,660.28, 744,818.70 and 313,437 is: 432,593.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,660.28 : 744,818.70 = 313,437 : x
  2. Step 2: Convert to fraction form
    539,660.28/744,818.70 = 313,437/x
  3. Step 3: Cross multiply
    539,660.28x = 744,818.70 × 313,437
  4. Step 4: Simplify right side
    539,660.28x = 233,453,738,871.90
  5. Step 5: Solve for x
    x = 233,453,738,871.90/539,660.28
  6. Step 6: Final answer
    x = 432,593.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.