Home / 667,868.28-921,695.94-396,097.08

Finding the Fourth Proportional to 667,868.28, 921,695.94 and 396,097.08

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Solution

The fourth proportional to 667,868.28, 921,695.94 and 396,097.08 is: 546,636.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,868.28 : 921,695.94 = 396,097.08 : x
  2. Step 2: Convert to fraction form
    667,868.28/921,695.94 = 396,097.08/x
  3. Step 3: Cross multiply
    667,868.28x = 921,695.94 × 396,097.08
  4. Step 4: Simplify right side
    667,868.28x = 365,081,070,481.86
  5. Step 5: Solve for x
    x = 365,081,070,481.86/667,868.28
  6. Step 6: Final answer
    x = 546,636.34

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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.