Home / 687,619.20-1,031,866.20-403,309.20

Finding the Fourth Proportional to 687,619.20, 1,031,866.20 and 403,309.20

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Solution

The fourth proportional to 687,619.20, 1,031,866.20 and 403,309.20 is: 605,220.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,619.20 : 1,031,866.20 = 403,309.20 : x
  2. Step 2: Convert to fraction form
    687,619.20/1,031,866.20 = 403,309.20/x
  3. Step 3: Cross multiply
    687,619.20x = 1,031,866.20 × 403,309.20
  4. Step 4: Simplify right side
    687,619.20x = 416,161,131,629.04
  5. Step 5: Solve for x
    x = 416,161,131,629.04/687,619.20
  6. Step 6: Final answer
    x = 605,220.35

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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.