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Finding the Fourth Proportional to 578,292.86, 867,735.78 and 279,028.64

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Solution

The fourth proportional to 578,292.86, 867,735.78 and 279,028.64 is: 418,686.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,292.86 : 867,735.78 = 279,028.64 : x
  2. Step 2: Convert to fraction form
    578,292.86/867,735.78 = 279,028.64/x
  3. Step 3: Cross multiply
    578,292.86x = 867,735.78 × 279,028.64
  4. Step 4: Simplify right side
    578,292.86x = 242,123,134,572.74
  5. Step 5: Solve for x
    x = 242,123,134,572.74/578,292.86
  6. Step 6: Final answer
    x = 418,686.02

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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.