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Finding the Fourth Proportional to 618,354.57, 853,327.42 and 342,730.02

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Solution

The fourth proportional to 618,354.57, 853,327.42 and 342,730.02 is: 472,966.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,354.57 : 853,327.42 = 342,730.02 : x
  2. Step 2: Convert to fraction form
    618,354.57/853,327.42 = 342,730.02/x
  3. Step 3: Cross multiply
    618,354.57x = 853,327.42 × 342,730.02
  4. Step 4: Simplify right side
    618,354.57x = 292,460,923,723.15
  5. Step 5: Solve for x
    x = 292,460,923,723.15/618,354.57
  6. Step 6: Final answer
    x = 472,966.38

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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.