Home / 528,799.33-729,743.09-287,081.56

Finding the Fourth Proportional to 528,799.33, 729,743.09 and 287,081.56

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Solution

The fourth proportional to 528,799.33, 729,743.09 and 287,081.56 is: 396,172.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,799.33 : 729,743.09 = 287,081.56 : x
  2. Step 2: Convert to fraction form
    528,799.33/729,743.09 = 287,081.56/x
  3. Step 3: Cross multiply
    528,799.33x = 729,743.09 × 287,081.56
  4. Step 4: Simplify right side
    528,799.33x = 209,495,784,676.42
  5. Step 5: Solve for x
    x = 209,495,784,676.42/528,799.33
  6. Step 6: Final answer
    x = 396,172.56

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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.