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Finding the Fourth Proportional to 978,947.13, 1,466,512.54 and 551,175.40

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Solution

The fourth proportional to 978,947.13, 1,466,512.54 and 551,175.40 is: 825,688.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,947.13 : 1,466,512.54 = 551,175.40 : x
  2. Step 2: Convert to fraction form
    978,947.13/1,466,512.54 = 551,175.40/x
  3. Step 3: Cross multiply
    978,947.13x = 1,466,512.54 × 551,175.40
  4. Step 4: Simplify right side
    978,947.13x = 808,305,630,795.30
  5. Step 5: Solve for x
    x = 808,305,630,795.30/978,947.13
  6. Step 6: Final answer
    x = 825,688.75

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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.