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Finding the Fourth Proportional to 1,155,793.80, 1,733,696.10 and 407,839.80

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Solution

The fourth proportional to 1,155,793.80, 1,733,696.10 and 407,839.80 is: 611,761.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155,793.80 : 1,733,696.10 = 407,839.80 : x
  2. Step 2: Convert to fraction form
    1,155,793.80/1,733,696.10 = 407,839.80/x
  3. Step 3: Cross multiply
    1,155,793.80x = 1,733,696.10 × 407,839.80
  4. Step 4: Simplify right side
    1,155,793.80x = 707,070,270,684.78
  5. Step 5: Solve for x
    x = 707,070,270,684.78/1,155,793.80
  6. Step 6: Final answer
    x = 611,761.61

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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.