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Finding the Fourth Proportional to 611,785.05, 844,287.31 and 418,597.95

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Solution

The fourth proportional to 611,785.05, 844,287.31 and 418,597.95 is: 577,681.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,785.05 : 844,287.31 = 418,597.95 : x
  2. Step 2: Convert to fraction form
    611,785.05/844,287.31 = 418,597.95/x
  3. Step 3: Cross multiply
    611,785.05x = 844,287.31 × 418,597.95
  4. Step 4: Simplify right side
    611,785.05x = 353,416,940,866.34
  5. Step 5: Solve for x
    x = 353,416,940,866.34/611,785.05
  6. Step 6: Final answer
    x = 577,681.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.