Home / 765,177.57-1,147,913.96-428,598.27

Finding the Fourth Proportional to 765,177.57, 1,147,913.96 and 428,598.27

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Solution

The fourth proportional to 765,177.57, 1,147,913.96 and 428,598.27 is: 642,980.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,177.57 : 1,147,913.96 = 428,598.27 : x
  2. Step 2: Convert to fraction form
    765,177.57/1,147,913.96 = 428,598.27/x
  3. Step 3: Cross multiply
    765,177.57x = 1,147,913.96 × 428,598.27
  4. Step 4: Simplify right side
    765,177.57x = 491,993,935,221.86
  5. Step 5: Solve for x
    x = 491,993,935,221.86/765,177.57
  6. Step 6: Final answer
    x = 642,980.08

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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.