Home / 1,231,988.95-1,700,126.83-688,132.47

Finding the Fourth Proportional to 1,231,988.95, 1,700,126.83 and 688,132.47

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Solution

The fourth proportional to 1,231,988.95, 1,700,126.83 and 688,132.47 is: 949,612.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,988.95 : 1,700,126.83 = 688,132.47 : x
  2. Step 2: Convert to fraction form
    1,231,988.95/1,700,126.83 = 688,132.47/x
  3. Step 3: Cross multiply
    1,231,988.95x = 1,700,126.83 × 688,132.47
  4. Step 4: Simplify right side
    1,231,988.95x = 1,169,912,474,841.17
  5. Step 5: Solve for x
    x = 1,169,912,474,841.17/1,231,988.95
  6. Step 6: Final answer
    x = 949,612.80

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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.