Home / 742,422.95-1,024,537.68-402,891.20

Finding the Fourth Proportional to 742,422.95, 1,024,537.68 and 402,891.20

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Solution

The fourth proportional to 742,422.95, 1,024,537.68 and 402,891.20 is: 555,986.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,422.95 : 1,024,537.68 = 402,891.20 : x
  2. Step 2: Convert to fraction form
    742,422.95/1,024,537.68 = 402,891.20/x
  3. Step 3: Cross multiply
    742,422.95x = 1,024,537.68 × 402,891.20
  4. Step 4: Simplify right side
    742,422.95x = 412,777,215,340.42
  5. Step 5: Solve for x
    x = 412,777,215,340.42/742,422.95
  6. Step 6: Final answer
    x = 555,986.60

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Double scale
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Similar ratio
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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.