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Finding the Fourth Proportional to 528,255.30, 729,122.40 and 324,355.08

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Solution

The fourth proportional to 528,255.30, 729,122.40 and 324,355.08 is: 447,689.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,255.30 : 729,122.40 = 324,355.08 : x
  2. Step 2: Convert to fraction form
    528,255.30/729,122.40 = 324,355.08/x
  3. Step 3: Cross multiply
    528,255.30x = 729,122.40 × 324,355.08
  4. Step 4: Simplify right side
    528,255.30x = 236,494,554,381.79
  5. Step 5: Solve for x
    x = 236,494,554,381.79/528,255.30
  6. Step 6: Final answer
    x = 447,689.88

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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.