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Finding the Fourth Proportional to 722,006.54, 996,331.16 and 395,256.92

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Solution

The fourth proportional to 722,006.54, 996,331.16 and 395,256.92 is: 545,433.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,006.54 : 996,331.16 = 395,256.92 : x
  2. Step 2: Convert to fraction form
    722,006.54/996,331.16 = 395,256.92/x
  3. Step 3: Cross multiply
    722,006.54x = 996,331.16 × 395,256.92
  4. Step 4: Simplify right side
    722,006.54x = 393,806,785,601.63
  5. Step 5: Solve for x
    x = 393,806,785,601.63/722,006.54
  6. Step 6: Final answer
    x = 545,433.82

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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.