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Finding the Fourth Proportional to 1,302,731.48, 1,797,773.66 and 721,964.11

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Solution

The fourth proportional to 1,302,731.48, 1,797,773.66 and 721,964.11 is: 996,312.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,302,731.48 : 1,797,773.66 = 721,964.11 : x
  2. Step 2: Convert to fraction form
    1,302,731.48/1,797,773.66 = 721,964.11/x
  3. Step 3: Cross multiply
    1,302,731.48x = 1,797,773.66 × 721,964.11
  4. Step 4: Simplify right side
    1,302,731.48x = 1,297,928,060,423.34
  5. Step 5: Solve for x
    x = 1,297,928,060,423.34/1,302,731.48
  6. Step 6: Final answer
    x = 996,312.81

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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.