Home / 528,542.70-729,389.38-286,825.26

Finding the Fourth Proportional to 528,542.70, 729,389.38 and 286,825.26

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Solution

The fourth proportional to 528,542.70, 729,389.38 and 286,825.26 is: 395,819.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,542.70 : 729,389.38 = 286,825.26 : x
  2. Step 2: Convert to fraction form
    528,542.70/729,389.38 = 286,825.26/x
  3. Step 3: Cross multiply
    528,542.70x = 729,389.38 × 286,825.26
  4. Step 4: Simplify right side
    528,542.70x = 209,207,301,115.68
  5. Step 5: Solve for x
    x = 209,207,301,115.68/528,542.70
  6. Step 6: Final answer
    x = 395,819.11

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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.