Home / 718,001.80-990,849.18-395,723.56

Finding the Fourth Proportional to 718,001.80, 990,849.18 and 395,723.56

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Solution

The fourth proportional to 718,001.80, 990,849.18 and 395,723.56 is: 546,102.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,001.80 : 990,849.18 = 395,723.56 : x
  2. Step 2: Convert to fraction form
    718,001.80/990,849.18 = 395,723.56/x
  3. Step 3: Cross multiply
    718,001.80x = 990,849.18 × 395,723.56
  4. Step 4: Simplify right side
    718,001.80x = 392,102,364,932.68
  5. Step 5: Solve for x
    x = 392,102,364,932.68/718,001.80
  6. Step 6: Final answer
    x = 546,102.20

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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.