Home / 3,121,936.40-4,681,908.02-991,522.20

Finding the Fourth Proportional to 3,121,936.40, 4,681,908.02 and 991,522.20

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Solution

The fourth proportional to 3,121,936.40, 4,681,908.02 and 991,522.20 is: 1,486,966.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121,936.40 : 4,681,908.02 = 991,522.20 : x
  2. Step 2: Convert to fraction form
    3,121,936.40/4,681,908.02 = 991,522.20/x
  3. Step 3: Cross multiply
    3,121,936.40x = 4,681,908.02 × 991,522.20
  4. Step 4: Simplify right side
    3,121,936.40x = 4,642,215,740,188.04
  5. Step 5: Solve for x
    x = 4,642,215,740,188.04/3,121,936.40
  6. Step 6: Final answer
    x = 1,486,966.79

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1.5x scale

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.