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Finding the Fourth Proportional to 529,451.40, 730,648.64 and 287,738.04

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Solution

The fourth proportional to 529,451.40, 730,648.64 and 287,738.04 is: 397,081.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,451.40 : 730,648.64 = 287,738.04 : x
  2. Step 2: Convert to fraction form
    529,451.40/730,648.64 = 287,738.04/x
  3. Step 3: Cross multiply
    529,451.40x = 730,648.64 × 287,738.04
  4. Step 4: Simplify right side
    529,451.40x = 210,235,407,602.27
  5. Step 5: Solve for x
    x = 210,235,407,602.27/529,451.40
  6. Step 6: Final answer
    x = 397,081.60

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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.