Home / 650,440.28-975,660.40-428,772.44

Finding the Fourth Proportional to 650,440.28, 975,660.40 and 428,772.44

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Solution

The fourth proportional to 650,440.28, 975,660.40 and 428,772.44 is: 643,158.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,440.28 : 975,660.40 = 428,772.44 : x
  2. Step 2: Convert to fraction form
    650,440.28/975,660.40 = 428,772.44/x
  3. Step 3: Cross multiply
    650,440.28x = 975,660.40 × 428,772.44
  4. Step 4: Simplify right side
    650,440.28x = 418,336,290,319.38
  5. Step 5: Solve for x
    x = 418,336,290,319.38/650,440.28
  6. Step 6: Final answer
    x = 643,158.65

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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.