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Finding the Fourth Proportional to 817,490.88, 1,226,486 and 418,414.42

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Solution

The fourth proportional to 817,490.88, 1,226,486 and 418,414.42 is: 627,749.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,490.88 : 1,226,486 = 418,414.42 : x
  2. Step 2: Convert to fraction form
    817,490.88/1,226,486 = 418,414.42/x
  3. Step 3: Cross multiply
    817,490.88x = 1,226,486 × 418,414.42
  4. Step 4: Simplify right side
    817,490.88x = 513,179,428,328.12
  5. Step 5: Solve for x
    x = 513,179,428,328.12/817,490.88
  6. Step 6: Final answer
    x = 627,749.42

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1.5x scale

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.