Home / 522,747.12-721,279.44-307,808.64

Finding the Fourth Proportional to 522,747.12, 721,279.44 and 307,808.64

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Solution

The fourth proportional to 522,747.12, 721,279.44 and 307,808.64 is: 424,710.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,747.12 : 721,279.44 = 307,808.64 : x
  2. Step 2: Convert to fraction form
    522,747.12/721,279.44 = 307,808.64/x
  3. Step 3: Cross multiply
    522,747.12x = 721,279.44 × 307,808.64
  4. Step 4: Simplify right side
    522,747.12x = 222,016,043,486.36
  5. Step 5: Solve for x
    x = 222,016,043,486.36/522,747.12
  6. Step 6: Final answer
    x = 424,710.22

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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.