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Finding the Fourth Proportional to 551,990.80, 827,986.20 and 473,258.80

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Solution

The fourth proportional to 551,990.80, 827,986.20 and 473,258.80 is: 709,888.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,990.80 : 827,986.20 = 473,258.80 : x
  2. Step 2: Convert to fraction form
    551,990.80/827,986.20 = 473,258.80/x
  3. Step 3: Cross multiply
    551,990.80x = 827,986.20 × 473,258.80
  4. Step 4: Simplify right side
    551,990.80x = 391,851,755,428.56
  5. Step 5: Solve for x
    x = 391,851,755,428.56/551,990.80
  6. Step 6: Final answer
    x = 709,888.20

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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.