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Finding the Fourth Proportional to 493,124.80, 739,687.20 and 280,548.40

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Solution

The fourth proportional to 493,124.80, 739,687.20 and 280,548.40 is: 420,822.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,124.80 : 739,687.20 = 280,548.40 : x
  2. Step 2: Convert to fraction form
    493,124.80/739,687.20 = 280,548.40/x
  3. Step 3: Cross multiply
    493,124.80x = 739,687.20 × 280,548.40
  4. Step 4: Simplify right side
    493,124.80x = 207,518,060,460.48
  5. Step 5: Solve for x
    x = 207,518,060,460.48/493,124.80
  6. Step 6: Final answer
    x = 420,822.60

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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.