Home / 498,385.56-687,707.78-280,566.74

Finding the Fourth Proportional to 498,385.56, 687,707.78 and 280,566.74

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Solution

The fourth proportional to 498,385.56, 687,707.78 and 280,566.74 is: 387,145.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,385.56 : 687,707.78 = 280,566.74 : x
  2. Step 2: Convert to fraction form
    498,385.56/687,707.78 = 280,566.74/x
  3. Step 3: Cross multiply
    498,385.56x = 687,707.78 × 280,566.74
  4. Step 4: Simplify right side
    498,385.56x = 192,947,929,907.24
  5. Step 5: Solve for x
    x = 192,947,929,907.24/498,385.56
  6. Step 6: Final answer
    x = 387,145.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.