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Finding the Fourth Proportional to 1,721,685.16, 2,375,982.44 and 947,404.52

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Solution

The fourth proportional to 1,721,685.16, 2,375,982.44 and 947,404.52 is: 1,307,449.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721,685.16 : 2,375,982.44 = 947,404.52 : x
  2. Step 2: Convert to fraction form
    1,721,685.16/2,375,982.44 = 947,404.52/x
  3. Step 3: Cross multiply
    1,721,685.16x = 2,375,982.44 × 947,404.52
  4. Step 4: Simplify right side
    1,721,685.16x = 2,251,016,503,096.63
  5. Step 5: Solve for x
    x = 2,251,016,503,096.63/1,721,685.16
  6. Step 6: Final answer
    x = 1,307,449.56

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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.