Home / 528,892.20-729,872.10-287,175.24

Finding the Fourth Proportional to 528,892.20, 729,872.10 and 287,175.24

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Solution

The fourth proportional to 528,892.20, 729,872.10 and 287,175.24 is: 396,302.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,892.20 : 729,872.10 = 287,175.24 : x
  2. Step 2: Convert to fraction form
    528,892.20/729,872.10 = 287,175.24/x
  3. Step 3: Cross multiply
    528,892.20x = 729,872.10 × 287,175.24
  4. Step 4: Simplify right side
    528,892.20x = 209,601,195,486.80
  5. Step 5: Solve for x
    x = 209,601,195,486.80/528,892.20
  6. Step 6: Final answer
    x = 396,302.30

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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.