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Finding the Fourth Proportional to 488,009.88, 730,741.59 and 392,719.58

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Solution

The fourth proportional to 488,009.88, 730,741.59 and 392,719.58 is: 588,054.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,009.88 : 730,741.59 = 392,719.58 : x
  2. Step 2: Convert to fraction form
    488,009.88/730,741.59 = 392,719.58/x
  3. Step 3: Cross multiply
    488,009.88x = 730,741.59 × 392,719.58
  4. Step 4: Simplify right side
    488,009.88x = 286,976,526,659.62
  5. Step 5: Solve for x
    x = 286,976,526,659.62/488,009.88
  6. Step 6: Final answer
    x = 588,054.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.