Home / 1,189,314.18-1,641,254.43-645,449.82

Finding the Fourth Proportional to 1,189,314.18, 1,641,254.43 and 645,449.82

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Solution

The fourth proportional to 1,189,314.18, 1,641,254.43 and 645,449.82 is: 890,721.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,314.18 : 1,641,254.43 = 645,449.82 : x
  2. Step 2: Convert to fraction form
    1,189,314.18/1,641,254.43 = 645,449.82/x
  3. Step 3: Cross multiply
    1,189,314.18x = 1,641,254.43 × 645,449.82
  4. Step 4: Simplify right side
    1,189,314.18x = 1,059,347,376,417.70
  5. Step 5: Solve for x
    x = 1,059,347,376,417.70/1,189,314.18
  6. Step 6: Final answer
    x = 890,721.22

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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.