Home / 742,498.56-1,024,652.16-420,209.28

Finding the Fourth Proportional to 742,498.56, 1,024,652.16 and 420,209.28

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Solution

The fourth proportional to 742,498.56, 1,024,652.16 and 420,209.28 is: 579,891.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,498.56 : 1,024,652.16 = 420,209.28 : x
  2. Step 2: Convert to fraction form
    742,498.56/1,024,652.16 = 420,209.28/x
  3. Step 3: Cross multiply
    742,498.56x = 1,024,652.16 × 420,209.28
  4. Step 4: Simplify right side
    742,498.56x = 430,568,346,404.05
  5. Step 5: Solve for x
    x = 430,568,346,404.05/742,498.56
  6. Step 6: Final answer
    x = 579,891.15

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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.