Home / 724,301.90-1,087,519.36-405,079.20

Finding the Fourth Proportional to 724,301.90, 1,087,519.36 and 405,079.20

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Solution

The fourth proportional to 724,301.90, 1,087,519.36 and 405,079.20 is: 608,215.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,301.90 : 1,087,519.36 = 405,079.20 : x
  2. Step 2: Convert to fraction form
    724,301.90/1,087,519.36 = 405,079.20/x
  3. Step 3: Cross multiply
    724,301.90x = 1,087,519.36 × 405,079.20
  4. Step 4: Simplify right side
    724,301.90x = 440,531,471,320.61
  5. Step 5: Solve for x
    x = 440,531,471,320.61/724,301.90
  6. Step 6: Final answer
    x = 608,215.27

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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.