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Finding the Fourth Proportional to 575,494.40, 861,686.40 and 451,078.40

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Solution

The fourth proportional to 575,494.40, 861,686.40 and 451,078.40 is: 675,398.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,494.40 : 861,686.40 = 451,078.40 : x
  2. Step 2: Convert to fraction form
    575,494.40/861,686.40 = 451,078.40/x
  3. Step 3: Cross multiply
    575,494.40x = 861,686.40 × 451,078.40
  4. Step 4: Simplify right side
    575,494.40x = 388,688,122,613.76
  5. Step 5: Solve for x
    x = 388,688,122,613.76/575,494.40
  6. Step 6: Final answer
    x = 675,398.62

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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.