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Finding the Fourth Proportional to 768,908.55, 1,061,103.65 and 424,743.09

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Solution

The fourth proportional to 768,908.55, 1,061,103.65 and 424,743.09 is: 586,150.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,908.55 : 1,061,103.65 = 424,743.09 : x
  2. Step 2: Convert to fraction form
    768,908.55/1,061,103.65 = 424,743.09/x
  3. Step 3: Cross multiply
    768,908.55x = 1,061,103.65 × 424,743.09
  4. Step 4: Simplify right side
    768,908.55x = 450,696,443,111.28
  5. Step 5: Solve for x
    x = 450,696,443,111.28/768,908.55
  6. Step 6: Final answer
    x = 586,150.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.