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Finding the Fourth Proportional to 722,617.60, 997,198.80 and 436,149.76

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Solution

The fourth proportional to 722,617.60, 997,198.80 and 436,149.76 is: 601,878.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,617.60 : 997,198.80 = 436,149.76 : x
  2. Step 2: Convert to fraction form
    722,617.60/997,198.80 = 436,149.76/x
  3. Step 3: Cross multiply
    722,617.60x = 997,198.80 × 436,149.76
  4. Step 4: Simplify right side
    722,617.60x = 434,928,017,292.29
  5. Step 5: Solve for x
    x = 434,928,017,292.29/722,617.60
  6. Step 6: Final answer
    x = 601,878.53

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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.