Home / 528,965.49-729,977.67-287,250.15

Finding the Fourth Proportional to 528,965.49, 729,977.67 and 287,250.15

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Solution

The fourth proportional to 528,965.49, 729,977.67 and 287,250.15 is: 396,408.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,965.49 : 729,977.67 = 287,250.15 : x
  2. Step 2: Convert to fraction form
    528,965.49/729,977.67 = 287,250.15/x
  3. Step 3: Cross multiply
    528,965.49x = 729,977.67 × 287,250.15
  4. Step 4: Simplify right side
    528,965.49x = 209,686,195,204.15
  5. Step 5: Solve for x
    x = 209,686,195,204.15/528,965.49
  6. Step 6: Final answer
    x = 396,408.08

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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.