Home / 1,145,112.90-1,716,200.55-639,672.90

Finding the Fourth Proportional to 1,145,112.90, 1,716,200.55 and 639,672.90

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Solution

The fourth proportional to 1,145,112.90, 1,716,200.55 and 639,672.90 is: 958,688.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145,112.90 : 1,716,200.55 = 639,672.90 : x
  2. Step 2: Convert to fraction form
    1,145,112.90/1,716,200.55 = 639,672.90/x
  3. Step 3: Cross multiply
    1,145,112.90x = 1,716,200.55 × 639,672.90
  4. Step 4: Simplify right side
    1,145,112.90x = 1,097,806,982,800.10
  5. Step 5: Solve for x
    x = 1,097,806,982,800.10/1,145,112.90
  6. Step 6: Final answer
    x = 958,688.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.