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Finding the Fourth Proportional to 722,608.56, 997,199.10 and 400,338.72

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Solution

The fourth proportional to 722,608.56, 997,199.10 and 400,338.72 is: 552,467.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,608.56 : 997,199.10 = 400,338.72 : x
  2. Step 2: Convert to fraction form
    722,608.56/997,199.10 = 400,338.72/x
  3. Step 3: Cross multiply
    722,608.56x = 997,199.10 × 400,338.72
  4. Step 4: Simplify right side
    722,608.56x = 399,217,411,279.15
  5. Step 5: Solve for x
    x = 399,217,411,279.15/722,608.56
  6. Step 6: Final answer
    x = 552,467.04

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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.