Home / 787,839.48-1,087,109.10-443,617.56

Finding the Fourth Proportional to 787,839.48, 1,087,109.10 and 443,617.56

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Solution

The fourth proportional to 787,839.48, 1,087,109.10 and 443,617.56 is: 612,130.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,839.48 : 1,087,109.10 = 443,617.56 : x
  2. Step 2: Convert to fraction form
    787,839.48/1,087,109.10 = 443,617.56/x
  3. Step 3: Cross multiply
    787,839.48x = 1,087,109.10 × 443,617.56
  4. Step 4: Simplify right side
    787,839.48x = 482,260,686,395.80
  5. Step 5: Solve for x
    x = 482,260,686,395.80/787,839.48
  6. Step 6: Final answer
    x = 612,130.64

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1.5x scale

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.