Home / 668,855.47-922,719.18-396,934.83

Finding the Fourth Proportional to 668,855.47, 922,719.18 and 396,934.83

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Solution

The fourth proportional to 668,855.47, 922,719.18 and 396,934.83 is: 547,591.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,855.47 : 922,719.18 = 396,934.83 : x
  2. Step 2: Convert to fraction form
    668,855.47/922,719.18 = 396,934.83/x
  3. Step 3: Cross multiply
    668,855.47x = 922,719.18 × 396,934.83
  4. Step 4: Simplify right side
    668,855.47x = 366,259,380,851.04
  5. Step 5: Solve for x
    x = 366,259,380,851.04/668,855.47
  6. Step 6: Final answer
    x = 547,591.22

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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.