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Finding the Fourth Proportional to 722,335.80, 996,989.28 and 480,628.56

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Solution

The fourth proportional to 722,335.80, 996,989.28 and 480,628.56 is: 663,377.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,335.80 : 996,989.28 = 480,628.56 : x
  2. Step 2: Convert to fraction form
    722,335.80/996,989.28 = 480,628.56/x
  3. Step 3: Cross multiply
    722,335.80x = 996,989.28 × 480,628.56
  4. Step 4: Simplify right side
    722,335.80x = 479,181,521,981.84
  5. Step 5: Solve for x
    x = 479,181,521,981.84/722,335.80
  6. Step 6: Final answer
    x = 663,377.78

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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.