Home / 1,189,518.35-1,641,491.15-645,642.43

Finding the Fourth Proportional to 1,189,518.35, 1,641,491.15 and 645,642.43

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Solution

The fourth proportional to 1,189,518.35, 1,641,491.15 and 645,642.43 is: 890,962.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,518.35 : 1,641,491.15 = 645,642.43 : x
  2. Step 2: Convert to fraction form
    1,189,518.35/1,641,491.15 = 645,642.43/x
  3. Step 3: Cross multiply
    1,189,518.35x = 1,641,491.15 × 645,642.43
  4. Step 4: Simplify right side
    1,189,518.35x = 1,059,816,327,577.55
  5. Step 5: Solve for x
    x = 1,059,816,327,577.55/1,189,518.35
  6. Step 6: Final answer
    x = 890,962.57

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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.