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Finding the Fourth Proportional to 768,909.05, 1,061,104.34 and 424,743.59

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Solution

The fourth proportional to 768,909.05, 1,061,104.34 and 424,743.59 is: 586,151.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,909.05 : 1,061,104.34 = 424,743.59 : x
  2. Step 2: Convert to fraction form
    768,909.05/1,061,104.34 = 424,743.59/x
  3. Step 3: Cross multiply
    768,909.05x = 1,061,104.34 × 424,743.59
  4. Step 4: Simplify right side
    768,909.05x = 450,697,259,306.94
  5. Step 5: Solve for x
    x = 450,697,259,306.94/768,909.05
  6. Step 6: Final answer
    x = 586,151.59

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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.