Home / 717,949.15-990,790.58-395,680.01

Finding the Fourth Proportional to 717,949.15, 990,790.58 and 395,680.01

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Solution

The fourth proportional to 717,949.15, 990,790.58 and 395,680.01 is: 546,049.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,949.15 : 990,790.58 = 395,680.01 : x
  2. Step 2: Convert to fraction form
    717,949.15/990,790.58 = 395,680.01/x
  3. Step 3: Cross multiply
    717,949.15x = 990,790.58 × 395,680.01
  4. Step 4: Simplify right side
    717,949.15x = 392,036,022,637.55
  5. Step 5: Solve for x
    x = 392,036,022,637.55/717,949.15
  6. Step 6: Final answer
    x = 546,049.84

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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.