Home / 1,189,314.20-1,641,254.43-645,449.84

Finding the Fourth Proportional to 1,189,314.20, 1,641,254.43 and 645,449.84

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Solution

The fourth proportional to 1,189,314.20, 1,641,254.43 and 645,449.84 is: 890,721.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,314.20 : 1,641,254.43 = 645,449.84 : x
  2. Step 2: Convert to fraction form
    1,189,314.20/1,641,254.43 = 645,449.84/x
  3. Step 3: Cross multiply
    1,189,314.20x = 1,641,254.43 × 645,449.84
  4. Step 4: Simplify right side
    1,189,314.20x = 1,059,347,401,036.52
  5. Step 5: Solve for x
    x = 1,059,347,401,036.52/1,189,314.20
  6. Step 6: Final answer
    x = 890,721.23

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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.