Home / 687,629.20-1,031,881.20-403,319.20

Finding the Fourth Proportional to 687,629.20, 1,031,881.20 and 403,319.20

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Solution

The fourth proportional to 687,629.20, 1,031,881.20 and 403,319.20 is: 605,235.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,629.20 : 1,031,881.20 = 403,319.20 : x
  2. Step 2: Convert to fraction form
    687,629.20/1,031,881.20 = 403,319.20/x
  3. Step 3: Cross multiply
    687,629.20x = 1,031,881.20 × 403,319.20
  4. Step 4: Simplify right side
    687,629.20x = 416,177,500,079.04
  5. Step 5: Solve for x
    x = 416,177,500,079.04/687,629.20
  6. Step 6: Final answer
    x = 605,235.35

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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.