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Finding the Fourth Proportional to 722,155.60, 996,265.96 and 435,512.72

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Solution

The fourth proportional to 722,155.60, 996,265.96 and 435,512.72 is: 600,821.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,155.60 : 996,265.96 = 435,512.72 : x
  2. Step 2: Convert to fraction form
    722,155.60/996,265.96 = 435,512.72/x
  3. Step 3: Cross multiply
    722,155.60x = 996,265.96 × 435,512.72
  4. Step 4: Simplify right side
    722,155.60x = 433,886,498,083.01
  5. Step 5: Solve for x
    x = 433,886,498,083.01/722,155.60
  6. Step 6: Final answer
    x = 600,821.34

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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.