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Finding the Fourth Proportional to 1,324,973.46, 1,828,463.68 and 721,361.46

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Solution

The fourth proportional to 1,324,973.46, 1,828,463.68 and 721,361.46 is: 995,478.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,324,973.46 : 1,828,463.68 = 721,361.46 : x
  2. Step 2: Convert to fraction form
    1,324,973.46/1,828,463.68 = 721,361.46/x
  3. Step 3: Cross multiply
    1,324,973.46x = 1,828,463.68 × 721,361.46
  4. Step 4: Simplify right side
    1,324,973.46x = 1,318,983,226,154.97
  5. Step 5: Solve for x
    x = 1,318,983,226,154.97/1,324,973.46
  6. Step 6: Final answer
    x = 995,478.98

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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.