Home / 528,965.50-729,977.68-287,250.16

Finding the Fourth Proportional to 528,965.50, 729,977.68 and 287,250.16

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Solution

The fourth proportional to 528,965.50, 729,977.68 and 287,250.16 is: 396,408.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,965.50 : 729,977.68 = 287,250.16 : x
  2. Step 2: Convert to fraction form
    528,965.50/729,977.68 = 287,250.16/x
  3. Step 3: Cross multiply
    528,965.50x = 729,977.68 × 287,250.16
  4. Step 4: Simplify right side
    528,965.50x = 209,686,205,376.43
  5. Step 5: Solve for x
    x = 209,686,205,376.43/528,965.50
  6. Step 6: Final answer
    x = 396,408.09

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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.