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Finding the Fourth Proportional to 722,637.65, 997,247.97 and 400,352.82

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Solution

The fourth proportional to 722,637.65, 997,247.97 and 400,352.82 is: 552,491.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,637.65 : 997,247.97 = 400,352.82 : x
  2. Step 2: Convert to fraction form
    722,637.65/997,247.97 = 400,352.82/x
  3. Step 3: Cross multiply
    722,637.65x = 997,247.97 × 400,352.82
  4. Step 4: Simplify right side
    722,637.65x = 399,251,037,028.78
  5. Step 5: Solve for x
    x = 399,251,037,028.78/722,637.65
  6. Step 6: Final answer
    x = 552,491.33

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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.