Home / 742,031.28-1,022,866.92-455,019.12

Finding the Fourth Proportional to 742,031.28, 1,022,866.92 and 455,019.12

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Solution

The fourth proportional to 742,031.28, 1,022,866.92 and 455,019.12 is: 627,229.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,031.28 : 1,022,866.92 = 455,019.12 : x
  2. Step 2: Convert to fraction form
    742,031.28/1,022,866.92 = 455,019.12/x
  3. Step 3: Cross multiply
    742,031.28x = 1,022,866.92 × 455,019.12
  4. Step 4: Simplify right side
    742,031.28x = 465,424,005,815.51
  5. Step 5: Solve for x
    x = 465,424,005,815.51/742,031.28
  6. Step 6: Final answer
    x = 627,229.63

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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.