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Finding the Fourth Proportional to 1,959,074.31, 2,938,845.17 and 947,469.35

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Solution

The fourth proportional to 1,959,074.31, 2,938,845.17 and 947,469.35 is: 1,421,317.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,959,074.31 : 2,938,845.17 = 947,469.35 : x
  2. Step 2: Convert to fraction form
    1,959,074.31/2,938,845.17 = 947,469.35/x
  3. Step 3: Cross multiply
    1,959,074.31x = 2,938,845.17 × 947,469.35
  4. Step 4: Simplify right side
    1,959,074.31x = 2,784,465,722,970.54
  5. Step 5: Solve for x
    x = 2,784,465,722,970.54/1,959,074.31
  6. Step 6: Final answer
    x = 1,421,317.05

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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.