Home / 529,143.15-730,231.13-287,439.56

Finding the Fourth Proportional to 529,143.15, 730,231.13 and 287,439.56

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Solution

The fourth proportional to 529,143.15, 730,231.13 and 287,439.56 is: 396,673.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,143.15 : 730,231.13 = 287,439.56 : x
  2. Step 2: Convert to fraction form
    529,143.15/730,231.13 = 287,439.56/x
  3. Step 3: Cross multiply
    529,143.15x = 730,231.13 × 287,439.56
  4. Step 4: Simplify right side
    529,143.15x = 209,897,311,054.35
  5. Step 5: Solve for x
    x = 209,897,311,054.35/529,143.15
  6. Step 6: Final answer
    x = 396,673.96

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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.