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Finding the Fourth Proportional to 978,946.88, 1,466,512.16 and 551,175.15

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Solution

The fourth proportional to 978,946.88, 1,466,512.16 and 551,175.15 is: 825,688.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,946.88 : 1,466,512.16 = 551,175.15 : x
  2. Step 2: Convert to fraction form
    978,946.88/1,466,512.16 = 551,175.15/x
  3. Step 3: Cross multiply
    978,946.88x = 1,466,512.16 × 551,175.15
  4. Step 4: Simplify right side
    978,946.88x = 808,305,059,764.82
  5. Step 5: Solve for x
    x = 808,305,059,764.82/978,946.88
  6. Step 6: Final answer
    x = 825,688.38

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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.