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Finding the Fourth Proportional to 722,591.80, 997,237.94 and 400,402.96

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Solution

The fourth proportional to 722,591.80, 997,237.94 and 400,402.96 is: 552,590.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,591.80 : 997,237.94 = 400,402.96 : x
  2. Step 2: Convert to fraction form
    722,591.80/997,237.94 = 400,402.96/x
  3. Step 3: Cross multiply
    722,591.80x = 997,237.94 × 400,402.96
  4. Step 4: Simplify right side
    722,591.80x = 399,297,023,000.30
  5. Step 5: Solve for x
    x = 399,297,023,000.30/722,591.80
  6. Step 6: Final answer
    x = 552,590.03

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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.