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Finding the Fourth Proportional to 557,729.40, 838,343.70 and 547,231.80

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Solution

The fourth proportional to 557,729.40, 838,343.70 and 547,231.80 is: 822,564.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,729.40 : 838,343.70 = 547,231.80 : x
  2. Step 2: Convert to fraction form
    557,729.40/838,343.70 = 547,231.80/x
  3. Step 3: Cross multiply
    557,729.40x = 838,343.70 × 547,231.80
  4. Step 4: Simplify right side
    557,729.40x = 458,768,331,969.66
  5. Step 5: Solve for x
    x = 458,768,331,969.66/557,729.40
  6. Step 6: Final answer
    x = 822,564.37

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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.