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Finding the Fourth Proportional to 679,754.50, 938,061.21 and 377,948.50

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Solution

The fourth proportional to 679,754.50, 938,061.21 and 377,948.50 is: 521,568.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,754.50 : 938,061.21 = 377,948.50 : x
  2. Step 2: Convert to fraction form
    679,754.50/938,061.21 = 377,948.50/x
  3. Step 3: Cross multiply
    679,754.50x = 938,061.21 × 377,948.50
  4. Step 4: Simplify right side
    679,754.50x = 354,538,827,227.69
  5. Step 5: Solve for x
    x = 354,538,827,227.69/679,754.50
  6. Step 6: Final answer
    x = 521,568.93

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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.