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Finding the Fourth Proportional to 555,008.80, 832,513.20 and 415,040.80

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Solution

The fourth proportional to 555,008.80, 832,513.20 and 415,040.80 is: 622,561.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,008.80 : 832,513.20 = 415,040.80 : x
  2. Step 2: Convert to fraction form
    555,008.80/832,513.20 = 415,040.80/x
  3. Step 3: Cross multiply
    555,008.80x = 832,513.20 × 415,040.80
  4. Step 4: Simplify right side
    555,008.80x = 345,526,944,538.56
  5. Step 5: Solve for x
    x = 345,526,944,538.56/555,008.80
  6. Step 6: Final answer
    x = 622,561.20

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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.