Home / 1,189,174.86-1,641,065.76-645,310.76

Finding the Fourth Proportional to 1,189,174.86, 1,641,065.76 and 645,310.76

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Solution

The fourth proportional to 1,189,174.86, 1,641,065.76 and 645,310.76 is: 890,531.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,174.86 : 1,641,065.76 = 645,310.76 : x
  2. Step 2: Convert to fraction form
    1,189,174.86/1,641,065.76 = 645,310.76/x
  3. Step 3: Cross multiply
    1,189,174.86x = 1,641,065.76 × 645,310.76
  4. Step 4: Simplify right side
    1,189,174.86x = 1,058,997,381,363.70
  5. Step 5: Solve for x
    x = 1,058,997,381,363.70/1,189,174.86
  6. Step 6: Final answer
    x = 890,531.26

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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.