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Finding the Fourth Proportional to 529,425.80, 730,612.29 and 287,708.39

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Solution

The fourth proportional to 529,425.80, 730,612.29 and 287,708.39 is: 397,040.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,425.80 : 730,612.29 = 287,708.39 : x
  2. Step 2: Convert to fraction form
    529,425.80/730,612.29 = 287,708.39/x
  3. Step 3: Cross multiply
    529,425.80x = 730,612.29 × 287,708.39
  4. Step 4: Simplify right side
    529,425.80x = 210,203,286,692.77
  5. Step 5: Solve for x
    x = 210,203,286,692.77/529,425.80
  6. Step 6: Final answer
    x = 397,040.13

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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.