Home / 1,189,424.45-1,641,407.28-645,560.18

Finding the Fourth Proportional to 1,189,424.45, 1,641,407.28 and 645,560.18

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Solution

The fourth proportional to 1,189,424.45, 1,641,407.28 and 645,560.18 is: 890,873.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,424.45 : 1,641,407.28 = 645,560.18 : x
  2. Step 2: Convert to fraction form
    1,189,424.45/1,641,407.28 = 645,560.18/x
  3. Step 3: Cross multiply
    1,189,424.45x = 1,641,407.28 × 645,560.18
  4. Step 4: Simplify right side
    1,189,424.45x = 1,059,627,179,130.11
  5. Step 5: Solve for x
    x = 1,059,627,179,130.11/1,189,424.45
  6. Step 6: Final answer
    x = 890,873.88

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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.