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Finding the Fourth Proportional to 529,122.19, 730,201.95 and 287,404.69

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Solution

The fourth proportional to 529,122.19, 730,201.95 and 287,404.69 is: 396,625.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,122.19 : 730,201.95 = 287,404.69 : x
  2. Step 2: Convert to fraction form
    529,122.19/730,201.95 = 287,404.69/x
  3. Step 3: Cross multiply
    529,122.19x = 730,201.95 × 287,404.69
  4. Step 4: Simplify right side
    529,122.19x = 209,863,465,077.15
  5. Step 5: Solve for x
    x = 209,863,465,077.15/529,122.19
  6. Step 6: Final answer
    x = 396,625.71

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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.