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Finding the Fourth Proportional to 722,593.80, 997,240.68 and 400,404.96

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Solution

The fourth proportional to 722,593.80, 997,240.68 and 400,404.96 is: 552,592.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,593.80 : 997,240.68 = 400,404.96 : x
  2. Step 2: Convert to fraction form
    722,593.80/997,240.68 = 400,404.96/x
  3. Step 3: Cross multiply
    722,593.80x = 997,240.68 × 400,404.96
  4. Step 4: Simplify right side
    722,593.80x = 399,300,114,585.77
  5. Step 5: Solve for x
    x = 399,300,114,585.77/722,593.80
  6. Step 6: Final answer
    x = 552,592.78

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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.