Home / 687,621.20-1,031,869.20-403,311.20

Finding the Fourth Proportional to 687,621.20, 1,031,869.20 and 403,311.20

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Solution

The fourth proportional to 687,621.20, 1,031,869.20 and 403,311.20 is: 605,223.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,621.20 : 1,031,869.20 = 403,311.20 : x
  2. Step 2: Convert to fraction form
    687,621.20/1,031,869.20 = 403,311.20/x
  3. Step 3: Cross multiply
    687,621.20x = 1,031,869.20 × 403,311.20
  4. Step 4: Simplify right side
    687,621.20x = 416,164,405,295.04
  5. Step 5: Solve for x
    x = 416,164,405,295.04/687,621.20
  6. Step 6: Final answer
    x = 605,223.35

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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.