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Finding the Fourth Proportional to 722,649.56, 997,217.11 and 400,340.44

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Solution

The fourth proportional to 722,649.56, 997,217.11 and 400,340.44 is: 552,448.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,649.56 : 997,217.11 = 400,340.44 : x
  2. Step 2: Convert to fraction form
    722,649.56/997,217.11 = 400,340.44/x
  3. Step 3: Cross multiply
    722,649.56x = 997,217.11 × 400,340.44
  4. Step 4: Simplify right side
    722,649.56x = 399,226,336,592.93
  5. Step 5: Solve for x
    x = 399,226,336,592.93/722,649.56
  6. Step 6: Final answer
    x = 552,448.04

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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.