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Finding the Fourth Proportional to 663,611.60, 994,639.80 and 497,205.20

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Solution

The fourth proportional to 663,611.60, 994,639.80 and 497,205.20 is: 745,225.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,611.60 : 994,639.80 = 497,205.20 : x
  2. Step 2: Convert to fraction form
    663,611.60/994,639.80 = 497,205.20/x
  3. Step 3: Cross multiply
    663,611.60x = 994,639.80 × 497,205.20
  4. Step 4: Simplify right side
    663,611.60x = 494,540,080,686.96
  5. Step 5: Solve for x
    x = 494,540,080,686.96/663,611.60
  6. Step 6: Final answer
    x = 745,225.19

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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.