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Finding the Fourth Proportional to 1,209,957.24, 1,810,375.64 and 721,834.24

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Solution

The fourth proportional to 1,209,957.24, 1,810,375.64 and 721,834.24 is: 1,080,030.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,957.24 : 1,810,375.64 = 721,834.24 : x
  2. Step 2: Convert to fraction form
    1,209,957.24/1,810,375.64 = 721,834.24/x
  3. Step 3: Cross multiply
    1,209,957.24x = 1,810,375.64 × 721,834.24
  4. Step 4: Simplify right side
    1,209,957.24x = 1,306,791,124,213.91
  5. Step 5: Solve for x
    x = 1,306,791,124,213.91/1,209,957.24
  6. Step 6: Final answer
    x = 1,080,030.83

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.