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Finding the Fourth Proportional to 663,799.34, 916,188.13 and 422,034.68

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Solution

The fourth proportional to 663,799.34, 916,188.13 and 422,034.68 is: 582,500.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,799.34 : 916,188.13 = 422,034.68 : x
  2. Step 2: Convert to fraction form
    663,799.34/916,188.13 = 422,034.68/x
  3. Step 3: Cross multiply
    663,799.34x = 916,188.13 × 422,034.68
  4. Step 4: Simplify right side
    663,799.34x = 386,663,165,499.73
  5. Step 5: Solve for x
    x = 386,663,165,499.73/663,799.34
  6. Step 6: Final answer
    x = 582,500.08

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1.5x scale

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.