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Finding the Fourth Proportional to 905,718.60, 1,359,452.70 and 551,424.60

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Solution

The fourth proportional to 905,718.60, 1,359,452.70 and 551,424.60 is: 827,669.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,718.60 : 1,359,452.70 = 551,424.60 : x
  2. Step 2: Convert to fraction form
    905,718.60/1,359,452.70 = 551,424.60/x
  3. Step 3: Cross multiply
    905,718.60x = 1,359,452.70 × 551,424.60
  4. Step 4: Simplify right side
    905,718.60x = 749,635,661,316.42
  5. Step 5: Solve for x
    x = 749,635,661,316.42/905,718.60
  6. Step 6: Final answer
    x = 827,669.50

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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.