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Finding the Fourth Proportional to 932,613.80, 1,398,920.70 and 859,130.60

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Solution

The fourth proportional to 932,613.80, 1,398,920.70 and 859,130.60 is: 1,288,695.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    932,613.80 : 1,398,920.70 = 859,130.60 : x
  2. Step 2: Convert to fraction form
    932,613.80/1,398,920.70 = 859,130.60/x
  3. Step 3: Cross multiply
    932,613.80x = 1,398,920.70 × 859,130.60
  4. Step 4: Simplify right side
    932,613.80x = 1,201,855,580,343.42
  5. Step 5: Solve for x
    x = 1,201,855,580,343.42/932,613.80
  6. Step 6: Final answer
    x = 1,288,695.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.