Home / 1,154,687.72-1,593,543.78-645,411.56

Finding the Fourth Proportional to 1,154,687.72, 1,593,543.78 and 645,411.56

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Solution

The fourth proportional to 1,154,687.72, 1,593,543.78 and 645,411.56 is: 890,709.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,154,687.72 : 1,593,543.78 = 645,411.56 : x
  2. Step 2: Convert to fraction form
    1,154,687.72/1,593,543.78 = 645,411.56/x
  3. Step 3: Cross multiply
    1,154,687.72x = 1,593,543.78 × 645,411.56
  4. Step 4: Simplify right side
    1,154,687.72x = 1,028,491,576,978.10
  5. Step 5: Solve for x
    x = 1,028,491,576,978.10/1,154,687.72
  6. Step 6: Final answer
    x = 890,709.72

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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.