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Finding the Fourth Proportional to 679,753.50, 938,059.83 and 377,947.50

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Solution

The fourth proportional to 679,753.50, 938,059.83 and 377,947.50 is: 521,567.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,753.50 : 938,059.83 = 377,947.50 : x
  2. Step 2: Convert to fraction form
    679,753.50/938,059.83 = 377,947.50/x
  3. Step 3: Cross multiply
    679,753.50x = 938,059.83 × 377,947.50
  4. Step 4: Simplify right side
    679,753.50x = 354,537,367,598.93
  5. Step 5: Solve for x
    x = 354,537,367,598.93/679,753.50
  6. Step 6: Final answer
    x = 521,567.55

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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.