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Finding the Fourth Proportional to 710,839.74, 980,960.80 and 424,353.66

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Solution

The fourth proportional to 710,839.74, 980,960.80 and 424,353.66 is: 585,609.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,839.74 : 980,960.80 = 424,353.66 : x
  2. Step 2: Convert to fraction form
    710,839.74/980,960.80 = 424,353.66/x
  3. Step 3: Cross multiply
    710,839.74x = 980,960.80 × 424,353.66
  4. Step 4: Simplify right side
    710,839.74x = 416,274,305,796.53
  5. Step 5: Solve for x
    x = 416,274,305,796.53/710,839.74
  6. Step 6: Final answer
    x = 585,609.22

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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.