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Finding the Fourth Proportional to 555,478.56, 765,987.12 and 475,171.92

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Solution

The fourth proportional to 555,478.56, 765,987.12 and 475,171.92 is: 655,246.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,478.56 : 765,987.12 = 475,171.92 : x
  2. Step 2: Convert to fraction form
    555,478.56/765,987.12 = 475,171.92/x
  3. Step 3: Cross multiply
    555,478.56x = 765,987.12 × 475,171.92
  4. Step 4: Simplify right side
    555,478.56x = 363,975,570,505.67
  5. Step 5: Solve for x
    x = 363,975,570,505.67/555,478.56
  6. Step 6: Final answer
    x = 655,246.84

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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.