Home / 528,961.16-729,972.34-287,246.60

Finding the Fourth Proportional to 528,961.16, 729,972.34 and 287,246.60

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Solution

The fourth proportional to 528,961.16, 729,972.34 and 287,246.60 is: 396,403.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,961.16 : 729,972.34 = 287,246.60 : x
  2. Step 2: Convert to fraction form
    528,961.16/729,972.34 = 287,246.60/x
  3. Step 3: Cross multiply
    528,961.16x = 729,972.34 × 287,246.60
  4. Step 4: Simplify right side
    528,961.16x = 209,682,072,759.04
  5. Step 5: Solve for x
    x = 209,682,072,759.04/528,961.16
  6. Step 6: Final answer
    x = 396,403.53

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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.