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Finding the Fourth Proportional to 650,428.02, 975,642.03 and 428,760.18

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Solution

The fourth proportional to 650,428.02, 975,642.03 and 428,760.18 is: 643,140.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,428.02 : 975,642.03 = 428,760.18 : x
  2. Step 2: Convert to fraction form
    650,428.02/975,642.03 = 428,760.18/x
  3. Step 3: Cross multiply
    650,428.02x = 975,642.03 × 428,760.18
  4. Step 4: Simplify right side
    650,428.02x = 418,316,452,398.37
  5. Step 5: Solve for x
    x = 418,316,452,398.37/650,428.02
  6. Step 6: Final answer
    x = 643,140.27

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Similar ratio
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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.