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Finding the Fourth Proportional to 1,139,928, 1,573,728.48 and 853,344.96

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Solution

The fourth proportional to 1,139,928, 1,573,728.48 and 853,344.96 is: 1,178,086.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,928 : 1,573,728.48 = 853,344.96 : x
  2. Step 2: Convert to fraction form
    1,139,928/1,573,728.48 = 853,344.96/x
  3. Step 3: Cross multiply
    1,139,928x = 1,573,728.48 × 853,344.96
  4. Step 4: Simplify right side
    1,139,928x = 1,342,933,266,816.46
  5. Step 5: Solve for x
    x = 1,342,933,266,816.46/1,139,928
  6. Step 6: Final answer
    x = 1,178,086.04

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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.