Home / 644,582,593.60-966,873,890.40-213,761,089.60

Finding the Fourth Proportional to 644,582,593.60, 966,873,890.40 and 213,761,089.60

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Solution

The fourth proportional to 644,582,593.60, 966,873,890.40 and 213,761,089.60 is: 320,641,634.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,582,593.60 : 966,873,890.40 = 213,761,089.60 : x
  2. Step 2: Convert to fraction form
    644,582,593.60/966,873,890.40 = 213,761,089.60/x
  3. Step 3: Cross multiply
    644,582,593.60x = 966,873,890.40 × 213,761,089.60
  4. Step 4: Simplify right side
    644,582,593.60x = 206,680,016,317,694,976
  5. Step 5: Solve for x
    x = 206,680,016,317,694,976/644,582,593.60
  6. Step 6: Final answer
    x = 320,641,634.40

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Double scale
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1.5x scale

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.