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Finding the Fourth Proportional to 580,187.62, 870,854.17 and 435,590.51

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Solution

The fourth proportional to 580,187.62, 870,854.17 and 435,590.51 is: 653,815.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,187.62 : 870,854.17 = 435,590.51 : x
  2. Step 2: Convert to fraction form
    580,187.62/870,854.17 = 435,590.51/x
  3. Step 3: Cross multiply
    580,187.62x = 870,854.17 × 435,590.51
  4. Step 4: Simplify right side
    580,187.62x = 379,335,816,911.04
  5. Step 5: Solve for x
    x = 379,335,816,911.04/580,187.62
  6. Step 6: Final answer
    x = 653,815.78

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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.