Home / 1,218,731.13-1,681,828.32-674,855.28

Finding the Fourth Proportional to 1,218,731.13, 1,681,828.32 and 674,855.28

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Solution

The fourth proportional to 1,218,731.13, 1,681,828.32 and 674,855.28 is: 931,288.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,731.13 : 1,681,828.32 = 674,855.28 : x
  2. Step 2: Convert to fraction form
    1,218,731.13/1,681,828.32 = 674,855.28/x
  3. Step 3: Cross multiply
    1,218,731.13x = 1,681,828.32 × 674,855.28
  4. Step 4: Simplify right side
    1,218,731.13x = 1,134,990,721,805.53
  5. Step 5: Solve for x
    x = 1,134,990,721,805.53/1,218,731.13
  6. Step 6: Final answer
    x = 931,288.86

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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.