Home / 693,400.80-1,040,101.20-338,642.40

Finding the Fourth Proportional to 693,400.80, 1,040,101.20 and 338,642.40

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Solution

The fourth proportional to 693,400.80, 1,040,101.20 and 338,642.40 is: 507,963.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,400.80 : 1,040,101.20 = 338,642.40 : x
  2. Step 2: Convert to fraction form
    693,400.80/1,040,101.20 = 338,642.40/x
  3. Step 3: Cross multiply
    693,400.80x = 1,040,101.20 × 338,642.40
  4. Step 4: Simplify right side
    693,400.80x = 352,222,366,610.88
  5. Step 5: Solve for x
    x = 352,222,366,610.88/693,400.80
  6. Step 6: Final answer
    x = 507,963.60

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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.