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Finding the Fourth Proportional to 657,132.38, 906,885 and 370,646.30

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Solution

The fourth proportional to 657,132.38, 906,885 and 370,646.30 is: 511,515.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,132.38 : 906,885 = 370,646.30 : x
  2. Step 2: Convert to fraction form
    657,132.38/906,885 = 370,646.30/x
  3. Step 3: Cross multiply
    657,132.38x = 906,885 × 370,646.30
  4. Step 4: Simplify right side
    657,132.38x = 336,133,569,775.50
  5. Step 5: Solve for x
    x = 336,133,569,775.50/657,132.38
  6. Step 6: Final answer
    x = 511,515.76

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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.