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Finding the Fourth Proportional to 478,815.77, 660,770.20 and 263,963.53

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Solution

The fourth proportional to 478,815.77, 660,770.20 and 263,963.53 is: 364,272.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,815.77 : 660,770.20 = 263,963.53 : x
  2. Step 2: Convert to fraction form
    478,815.77/660,770.20 = 263,963.53/x
  3. Step 3: Cross multiply
    478,815.77x = 660,770.20 × 263,963.53
  4. Step 4: Simplify right side
    478,815.77x = 174,419,234,510.81
  5. Step 5: Solve for x
    x = 174,419,234,510.81/478,815.77
  6. Step 6: Final answer
    x = 364,272.12

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1.5x scale

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.