Home / 1,231,988.88-1,700,126.46-688,132.59

Finding the Fourth Proportional to 1,231,988.88, 1,700,126.46 and 688,132.59

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Solution

The fourth proportional to 1,231,988.88, 1,700,126.46 and 688,132.59 is: 949,612.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,988.88 : 1,700,126.46 = 688,132.59 : x
  2. Step 2: Convert to fraction form
    1,231,988.88/1,700,126.46 = 688,132.59/x
  3. Step 3: Cross multiply
    1,231,988.88x = 1,700,126.46 × 688,132.59
  4. Step 4: Simplify right side
    1,231,988.88x = 1,169,912,424,247.33
  5. Step 5: Solve for x
    x = 1,169,912,424,247.33/1,231,988.88
  6. Step 6: Final answer
    x = 949,612.81

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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.