Home / 457,711.20-687,182.40-268,365.60

Finding the Fourth Proportional to 457,711.20, 687,182.40 and 268,365.60

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Solution

The fourth proportional to 457,711.20, 687,182.40 and 268,365.60 is: 402,909.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,711.20 : 687,182.40 = 268,365.60 : x
  2. Step 2: Convert to fraction form
    457,711.20/687,182.40 = 268,365.60/x
  3. Step 3: Cross multiply
    457,711.20x = 687,182.40 × 268,365.60
  4. Step 4: Simplify right side
    457,711.20x = 184,416,117,085.44
  5. Step 5: Solve for x
    x = 184,416,117,085.44/457,711.20
  6. Step 6: Final answer
    x = 402,909.34

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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.