Home / 484,320.15-668,286.29-280,331.16

Finding the Fourth Proportional to 484,320.15, 668,286.29 and 280,331.16

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Solution

The fourth proportional to 484,320.15, 668,286.29 and 280,331.16 is: 386,813.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,320.15 : 668,286.29 = 280,331.16 : x
  2. Step 2: Convert to fraction form
    484,320.15/668,286.29 = 280,331.16/x
  3. Step 3: Cross multiply
    484,320.15x = 668,286.29 × 280,331.16
  4. Step 4: Simplify right side
    484,320.15x = 187,341,469,486.14
  5. Step 5: Solve for x
    x = 187,341,469,486.14/484,320.15
  6. Step 6: Final answer
    x = 386,813.29

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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.