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Finding the Fourth Proportional to 606,918.60, 911,362.05 and 439,613.10

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Solution

The fourth proportional to 606,918.60, 911,362.05 and 439,613.10 is: 660,132.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,918.60 : 911,362.05 = 439,613.10 : x
  2. Step 2: Convert to fraction form
    606,918.60/911,362.05 = 439,613.10/x
  3. Step 3: Cross multiply
    606,918.60x = 911,362.05 × 439,613.10
  4. Step 4: Simplify right side
    606,918.60x = 400,646,696,022.86
  5. Step 5: Solve for x
    x = 400,646,696,022.86/606,918.60
  6. Step 6: Final answer
    x = 660,132.51

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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.