Home / 718,028.66-990,839.04-395,737.76

Finding the Fourth Proportional to 718,028.66, 990,839.04 and 395,737.76

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Solution

The fourth proportional to 718,028.66, 990,839.04 and 395,737.76 is: 546,095.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,028.66 : 990,839.04 = 395,737.76 : x
  2. Step 2: Convert to fraction form
    718,028.66/990,839.04 = 395,737.76/x
  3. Step 3: Cross multiply
    718,028.66x = 990,839.04 × 395,737.76
  4. Step 4: Simplify right side
    718,028.66x = 392,112,422,210.15
  5. Step 5: Solve for x
    x = 392,112,422,210.15/718,028.66
  6. Step 6: Final answer
    x = 546,095.78

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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.