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Finding the Fourth Proportional to 713,958.49, 985,256.88 and 387,270.68

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Solution

The fourth proportional to 713,958.49, 985,256.88 and 387,270.68 is: 534,430.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,958.49 : 985,256.88 = 387,270.68 : x
  2. Step 2: Convert to fraction form
    713,958.49/985,256.88 = 387,270.68/x
  3. Step 3: Cross multiply
    713,958.49x = 985,256.88 × 387,270.68
  4. Step 4: Simplify right side
    713,958.49x = 381,561,101,892.28
  5. Step 5: Solve for x
    x = 381,561,101,892.28/713,958.49
  6. Step 6: Final answer
    x = 534,430.37

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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.