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Finding the Fourth Proportional to 559,691.12, 772,351.26 and 305,036.84

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Solution

The fourth proportional to 559,691.12, 772,351.26 and 305,036.84 is: 420,938.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,691.12 : 772,351.26 = 305,036.84 : x
  2. Step 2: Convert to fraction form
    559,691.12/772,351.26 = 305,036.84/x
  3. Step 3: Cross multiply
    559,691.12x = 772,351.26 × 305,036.84
  4. Step 4: Simplify right side
    559,691.12x = 235,595,587,720.42
  5. Step 5: Solve for x
    x = 235,595,587,720.42/559,691.12
  6. Step 6: Final answer
    x = 420,938.58

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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.