Home / 742,805.16-1,025,134.56-420,572.04

Finding the Fourth Proportional to 742,805.16, 1,025,134.56 and 420,572.04

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Solution

The fourth proportional to 742,805.16, 1,025,134.56 and 420,572.04 is: 580,425.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,805.16 : 1,025,134.56 = 420,572.04 : x
  2. Step 2: Convert to fraction form
    742,805.16/1,025,134.56 = 420,572.04/x
  3. Step 3: Cross multiply
    742,805.16x = 1,025,134.56 × 420,572.04
  4. Step 4: Simplify right side
    742,805.16x = 431,142,933,173.70
  5. Step 5: Solve for x
    x = 431,142,933,173.70/742,805.16
  6. Step 6: Final answer
    x = 580,425.33

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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.