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Finding the Fourth Proportional to 444,079.80, 666,119.70 and 425,417.40

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Solution

The fourth proportional to 444,079.80, 666,119.70 and 425,417.40 is: 638,126.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,079.80 : 666,119.70 = 425,417.40 : x
  2. Step 2: Convert to fraction form
    444,079.80/666,119.70 = 425,417.40/x
  3. Step 3: Cross multiply
    444,079.80x = 666,119.70 × 425,417.40
  4. Step 4: Simplify right side
    444,079.80x = 283,378,910,862.78
  5. Step 5: Solve for x
    x = 283,378,910,862.78/444,079.80
  6. Step 6: Final answer
    x = 638,126.10

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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.