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Finding the Fourth Proportional to 642,098.98, 886,087.65 and 370,167.40

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Solution

The fourth proportional to 642,098.98, 886,087.65 and 370,167.40 is: 510,825.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,098.98 : 886,087.65 = 370,167.40 : x
  2. Step 2: Convert to fraction form
    642,098.98/886,087.65 = 370,167.40/x
  3. Step 3: Cross multiply
    642,098.98x = 886,087.65 × 370,167.40
  4. Step 4: Simplify right side
    642,098.98x = 328,000,761,572.61
  5. Step 5: Solve for x
    x = 328,000,761,572.61/642,098.98
  6. Step 6: Final answer
    x = 510,825.86

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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.