Home / 1,189,610.70-1,641,691.71-645,768.78

Finding the Fourth Proportional to 1,189,610.70, 1,641,691.71 and 645,768.78

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Solution

The fourth proportional to 1,189,610.70, 1,641,691.71 and 645,768.78 is: 891,176.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,610.70 : 1,641,691.71 = 645,768.78 : x
  2. Step 2: Convert to fraction form
    1,189,610.70/1,641,691.71 = 645,768.78/x
  3. Step 3: Cross multiply
    1,189,610.70x = 1,641,691.71 × 645,768.78
  4. Step 4: Simplify right side
    1,189,610.70x = 1,060,153,252,702.81
  5. Step 5: Solve for x
    x = 1,060,153,252,702.81/1,189,610.70
  6. Step 6: Final answer
    x = 891,176.63

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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.