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Finding the Fourth Proportional to 529,458.91, 730,657.88 and 287,741.53

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Solution

The fourth proportional to 529,458.91, 730,657.88 and 287,741.53 is: 397,085.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,458.91 : 730,657.88 = 287,741.53 : x
  2. Step 2: Convert to fraction form
    529,458.91/730,657.88 = 287,741.53/x
  3. Step 3: Cross multiply
    529,458.91x = 730,657.88 × 287,741.53
  4. Step 4: Simplify right side
    529,458.91x = 210,240,615,190.47
  5. Step 5: Solve for x
    x = 210,240,615,190.47/529,458.91
  6. Step 6: Final answer
    x = 397,085.80

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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.