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Finding the Fourth Proportional to 529,482.20, 730,691.09 and 287,764.79

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Solution

The fourth proportional to 529,482.20, 730,691.09 and 287,764.79 is: 397,118.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,482.20 : 730,691.09 = 287,764.79 : x
  2. Step 2: Convert to fraction form
    529,482.20/730,691.09 = 287,764.79/x
  3. Step 3: Cross multiply
    529,482.20x = 730,691.09 × 287,764.79
  4. Step 4: Simplify right side
    529,482.20x = 210,267,168,068.72
  5. Step 5: Solve for x
    x = 210,267,168,068.72/529,482.20
  6. Step 6: Final answer
    x = 397,118.48

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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.