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Finding the Fourth Proportional to 444,078.30, 666,117.45 and 425,415.90

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Solution

The fourth proportional to 444,078.30, 666,117.45 and 425,415.90 is: 638,123.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,078.30 : 666,117.45 = 425,415.90 : x
  2. Step 2: Convert to fraction form
    444,078.30/666,117.45 = 425,415.90/x
  3. Step 3: Cross multiply
    444,078.30x = 666,117.45 × 425,415.90
  4. Step 4: Simplify right side
    444,078.30x = 283,376,954,497.46
  5. Step 5: Solve for x
    x = 283,376,954,497.46/444,078.30
  6. Step 6: Final answer
    x = 638,123.85

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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.