Home / 742,517.88-1,024,675.42-402,986.28

Finding the Fourth Proportional to 742,517.88, 1,024,675.42 and 402,986.28

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Solution

The fourth proportional to 742,517.88, 1,024,675.42 and 402,986.28 is: 556,121.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,517.88 : 1,024,675.42 = 402,986.28 : x
  2. Step 2: Convert to fraction form
    742,517.88/1,024,675.42 = 402,986.28/x
  3. Step 3: Cross multiply
    742,517.88x = 1,024,675.42 × 402,986.28
  4. Step 4: Simplify right side
    742,517.88x = 412,930,135,713.24
  5. Step 5: Solve for x
    x = 412,930,135,713.24/742,517.88
  6. Step 6: Final answer
    x = 556,121.47

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Double scale
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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.