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Finding the Fourth Proportional to 619,323.40, 853,678.56 and 466,131.28

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Solution

The fourth proportional to 619,323.40, 853,678.56 and 466,131.28 is: 642,517.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,323.40 : 853,678.56 = 466,131.28 : x
  2. Step 2: Convert to fraction form
    619,323.40/853,678.56 = 466,131.28/x
  3. Step 3: Cross multiply
    619,323.40x = 853,678.56 × 466,131.28
  4. Step 4: Simplify right side
    619,323.40x = 397,926,279,881.36
  5. Step 5: Solve for x
    x = 397,926,279,881.36/619,323.40
  6. Step 6: Final answer
    x = 642,517.75

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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.