Home / 717,977.52-990,764.46-395,669.61

Finding the Fourth Proportional to 717,977.52, 990,764.46 and 395,669.61

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Solution

The fourth proportional to 717,977.52, 990,764.46 and 395,669.61 is: 545,999.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,977.52 : 990,764.46 = 395,669.61 : x
  2. Step 2: Convert to fraction form
    717,977.52/990,764.46 = 395,669.61/x
  3. Step 3: Cross multiply
    717,977.52x = 990,764.46 × 395,669.61
  4. Step 4: Simplify right side
    717,977.52x = 392,015,387,490.06
  5. Step 5: Solve for x
    x = 392,015,387,490.06/717,977.52
  6. Step 6: Final answer
    x = 545,999.53

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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.