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Finding the Fourth Proportional to 578,293.86, 867,737.28 and 279,029.64

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Solution

The fourth proportional to 578,293.86, 867,737.28 and 279,029.64 is: 418,687.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,293.86 : 867,737.28 = 279,029.64 : x
  2. Step 2: Convert to fraction form
    578,293.86/867,737.28 = 279,029.64/x
  3. Step 3: Cross multiply
    578,293.86x = 867,737.28 × 279,029.64
  4. Step 4: Simplify right side
    578,293.86x = 242,124,420,852.98
  5. Step 5: Solve for x
    x = 242,124,420,852.98/578,293.86
  6. Step 6: Final answer
    x = 418,687.52

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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.