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Finding the Fourth Proportional to 572,191.70, 789,543.86 and 342,695.21

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Solution

The fourth proportional to 572,191.70, 789,543.86 and 342,695.21 is: 472,871.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,191.70 : 789,543.86 = 342,695.21 : x
  2. Step 2: Convert to fraction form
    572,191.70/789,543.86 = 342,695.21/x
  3. Step 3: Cross multiply
    572,191.70x = 789,543.86 × 342,695.21
  4. Step 4: Simplify right side
    572,191.70x = 270,572,893,245.72
  5. Step 5: Solve for x
    x = 270,572,893,245.72/572,191.70
  6. Step 6: Final answer
    x = 472,871.06

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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.