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Finding the Fourth Proportional to 713,747.39, 984,972.03 and 391,463.78

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Solution

The fourth proportional to 713,747.39, 984,972.03 and 391,463.78 is: 540,220.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,747.39 : 984,972.03 = 391,463.78 : x
  2. Step 2: Convert to fraction form
    713,747.39/984,972.03 = 391,463.78/x
  3. Step 3: Cross multiply
    713,747.39x = 984,972.03 × 391,463.78
  4. Step 4: Simplify right side
    713,747.39x = 385,580,874,058.07
  5. Step 5: Solve for x
    x = 385,580,874,058.07/713,747.39
  6. Step 6: Final answer
    x = 540,220.36

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1.5x scale

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.