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Finding the Fourth Proportional to 715,233.03, 986,680.53 and 521,224.80

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Solution

The fourth proportional to 715,233.03, 986,680.53 and 521,224.80 is: 719,041.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,233.03 : 986,680.53 = 521,224.80 : x
  2. Step 2: Convert to fraction form
    715,233.03/986,680.53 = 521,224.80/x
  3. Step 3: Cross multiply
    715,233.03x = 986,680.53 × 521,224.80
  4. Step 4: Simplify right side
    715,233.03x = 514,282,361,913.14
  5. Step 5: Solve for x
    x = 514,282,361,913.14/715,233.03
  6. Step 6: Final answer
    x = 719,041.68

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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.