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Finding the Fourth Proportional to 679,757.50, 938,065.35 and 377,951.50

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Solution

The fourth proportional to 679,757.50, 938,065.35 and 377,951.50 is: 521,573.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,757.50 : 938,065.35 = 377,951.50 : x
  2. Step 2: Convert to fraction form
    679,757.50/938,065.35 = 377,951.50/x
  3. Step 3: Cross multiply
    679,757.50x = 938,065.35 × 377,951.50
  4. Step 4: Simplify right side
    679,757.50x = 354,543,206,130.53
  5. Step 5: Solve for x
    x = 354,543,206,130.53/679,757.50
  6. Step 6: Final answer
    x = 521,573.07

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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.