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Finding the Fourth Proportional to 529,203.72, 730,288.86 and 287,480.88

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Solution

The fourth proportional to 529,203.72, 730,288.86 and 287,480.88 is: 396,716.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,203.72 : 730,288.86 = 287,480.88 : x
  2. Step 2: Convert to fraction form
    529,203.72/730,288.86 = 287,480.88/x
  3. Step 3: Cross multiply
    529,203.72x = 730,288.86 × 287,480.88
  4. Step 4: Simplify right side
    529,203.72x = 209,944,084,127.00
  5. Step 5: Solve for x
    x = 209,944,084,127.00/529,203.72
  6. Step 6: Final answer
    x = 396,716.95

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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.