Home / 718,230.20-991,160.68-395,933.22

Finding the Fourth Proportional to 718,230.20, 991,160.68 and 395,933.22

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Solution

The fourth proportional to 718,230.20, 991,160.68 and 395,933.22 is: 546,389.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,230.20 : 991,160.68 = 395,933.22 : x
  2. Step 2: Convert to fraction form
    718,230.20/991,160.68 = 395,933.22/x
  3. Step 3: Cross multiply
    718,230.20x = 991,160.68 × 395,933.22
  4. Step 4: Simplify right side
    718,230.20x = 392,433,437,590.12
  5. Step 5: Solve for x
    x = 392,433,437,590.12/718,230.20
  6. Step 6: Final answer
    x = 546,389.50

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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.