Home / 1,215,338.31-1,676,639.94-731,623.18

Finding the Fourth Proportional to 1,215,338.31, 1,676,639.94 and 731,623.18

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Solution

The fourth proportional to 1,215,338.31, 1,676,639.94 and 731,623.18 is: 1,009,322.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,338.31 : 1,676,639.94 = 731,623.18 : x
  2. Step 2: Convert to fraction form
    1,215,338.31/1,676,639.94 = 731,623.18/x
  3. Step 3: Cross multiply
    1,215,338.31x = 1,676,639.94 × 731,623.18
  4. Step 4: Simplify right side
    1,215,338.31x = 1,226,668,644,617.81
  5. Step 5: Solve for x
    x = 1,226,668,644,617.81/1,215,338.31
  6. Step 6: Final answer
    x = 1,009,322.78

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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.