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Finding the Fourth Proportional to 484,754.15, 668,960.75 and 280,844.48

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Solution

The fourth proportional to 484,754.15, 668,960.75 and 280,844.48 is: 387,565.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,754.15 : 668,960.75 = 280,844.48 : x
  2. Step 2: Convert to fraction form
    484,754.15/668,960.75 = 280,844.48/x
  3. Step 3: Cross multiply
    484,754.15x = 668,960.75 × 280,844.48
  4. Step 4: Simplify right side
    484,754.15x = 187,873,936,348.67
  5. Step 5: Solve for x
    x = 187,873,936,348.67/484,754.15
  6. Step 6: Final answer
    x = 387,565.40

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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.