Home / 528,849.68-729,820.14-287,132.72

Finding the Fourth Proportional to 528,849.68, 729,820.14 and 287,132.72

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Solution

The fourth proportional to 528,849.68, 729,820.14 and 287,132.72 is: 396,247.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,849.68 : 729,820.14 = 287,132.72 : x
  2. Step 2: Convert to fraction form
    528,849.68/729,820.14 = 287,132.72/x
  3. Step 3: Cross multiply
    528,849.68x = 729,820.14 × 287,132.72
  4. Step 4: Simplify right side
    528,849.68x = 209,555,241,908.98
  5. Step 5: Solve for x
    x = 209,555,241,908.98/528,849.68
  6. Step 6: Final answer
    x = 396,247.27

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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.