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Finding the Fourth Proportional to 528,673.18, 729,948.13 and 324,997.18

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Solution

The fourth proportional to 528,673.18, 729,948.13 and 324,997.18 is: 448,729.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,673.18 : 729,948.13 = 324,997.18 : x
  2. Step 2: Convert to fraction form
    528,673.18/729,948.13 = 324,997.18/x
  3. Step 3: Cross multiply
    528,673.18x = 729,948.13 × 324,997.18
  4. Step 4: Simplify right side
    528,673.18x = 237,231,083,796.27
  5. Step 5: Solve for x
    x = 237,231,083,796.27/528,673.18
  6. Step 6: Final answer
    x = 448,729.18

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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.