Home / 1,189,375.71-1,641,350.30-645,516.33

Finding the Fourth Proportional to 1,189,375.71, 1,641,350.30 and 645,516.33

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Solution

The fourth proportional to 1,189,375.71, 1,641,350.30 and 645,516.33 is: 890,818.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,375.71 : 1,641,350.30 = 645,516.33 : x
  2. Step 2: Convert to fraction form
    1,189,375.71/1,641,350.30 = 645,516.33/x
  3. Step 3: Cross multiply
    1,189,375.71x = 1,641,350.30 × 645,516.33
  4. Step 4: Simplify right side
    1,189,375.71x = 1,059,518,418,672.82
  5. Step 5: Solve for x
    x = 1,059,518,418,672.82/1,189,375.71
  6. Step 6: Final answer
    x = 890,818.95

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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.