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Finding the Fourth Proportional to 978,944.63, 1,466,508.79 and 551,172.90

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Solution

The fourth proportional to 978,944.63, 1,466,508.79 and 551,172.90 is: 825,685.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,944.63 : 1,466,508.79 = 551,172.90 : x
  2. Step 2: Convert to fraction form
    978,944.63/1,466,508.79 = 551,172.90/x
  3. Step 3: Cross multiply
    978,944.63x = 1,466,508.79 × 551,172.90
  4. Step 4: Simplify right side
    978,944.63x = 808,299,899,903.93
  5. Step 5: Solve for x
    x = 808,299,899,903.93/978,944.63
  6. Step 6: Final answer
    x = 825,685.00

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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.