Home / 2,165,343.32-2,988,312.49-1,247,555.78

Finding the Fourth Proportional to 2,165,343.32, 2,988,312.49 and 1,247,555.78

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Solution

The fourth proportional to 2,165,343.32, 2,988,312.49 and 1,247,555.78 is: 1,721,706.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165,343.32 : 2,988,312.49 = 1,247,555.78 : x
  2. Step 2: Convert to fraction form
    2,165,343.32/2,988,312.49 = 1,247,555.78/x
  3. Step 3: Cross multiply
    2,165,343.32x = 2,988,312.49 × 1,247,555.78
  4. Step 4: Simplify right side
    2,165,343.32x = 3,728,086,519,345.69
  5. Step 5: Solve for x
    x = 3,728,086,519,345.69/2,165,343.32
  6. Step 6: Final answer
    x = 1,721,706.89

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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.