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Finding the Fourth Proportional to 659,886.28, 988,428.54 and 446,785

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Solution

The fourth proportional to 659,886.28, 988,428.54 and 446,785 is: 669,229.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,886.28 : 988,428.54 = 446,785 : x
  2. Step 2: Convert to fraction form
    659,886.28/988,428.54 = 446,785/x
  3. Step 3: Cross multiply
    659,886.28x = 988,428.54 × 446,785
  4. Step 4: Simplify right side
    659,886.28x = 441,615,045,243.90
  5. Step 5: Solve for x
    x = 441,615,045,243.90/659,886.28
  6. Step 6: Final answer
    x = 669,229.02

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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.