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Finding the Fourth Proportional to 529,480.80, 730,689.16 and 287,763.36

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Solution

The fourth proportional to 529,480.80, 730,689.16 and 287,763.36 is: 397,116.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,480.80 : 730,689.16 = 287,763.36 : x
  2. Step 2: Convert to fraction form
    529,480.80/730,689.16 = 287,763.36/x
  3. Step 3: Cross multiply
    529,480.80x = 730,689.16 × 287,763.36
  4. Step 4: Simplify right side
    529,480.80x = 210,265,567,797.18
  5. Step 5: Solve for x
    x = 210,265,567,797.18/529,480.80
  6. Step 6: Final answer
    x = 397,116.51

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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.