Home / 724,387.20-1,087,358.40-409,459.20

Finding the Fourth Proportional to 724,387.20, 1,087,358.40 and 409,459.20

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Solution

The fourth proportional to 724,387.20, 1,087,358.40 and 409,459.20 is: 614,628.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,387.20 : 1,087,358.40 = 409,459.20 : x
  2. Step 2: Convert to fraction form
    724,387.20/1,087,358.40 = 409,459.20/x
  3. Step 3: Cross multiply
    724,387.20x = 1,087,358.40 × 409,459.20
  4. Step 4: Simplify right side
    724,387.20x = 445,228,900,577.28
  5. Step 5: Solve for x
    x = 445,228,900,577.28/724,387.20
  6. Step 6: Final answer
    x = 614,628.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.