Home / 1,189,235.45-1,641,146.00-645,371.28

Finding the Fourth Proportional to 1,189,235.45, 1,641,146.00 and 645,371.28

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Solution

The fourth proportional to 1,189,235.45, 1,641,146.00 and 645,371.28 is: 890,612.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,235.45 : 1,641,146.00 = 645,371.28 : x
  2. Step 2: Convert to fraction form
    1,189,235.45/1,641,146.00 = 645,371.28/x
  3. Step 3: Cross multiply
    1,189,235.45x = 1,641,146.00 × 645,371.28
  4. Step 4: Simplify right side
    1,189,235.45x = 1,059,148,491,460.02
  5. Step 5: Solve for x
    x = 1,059,148,491,460.02/1,189,235.45
  6. Step 6: Final answer
    x = 890,612.95

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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.