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Finding the Fourth Proportional to 626,634.88, 864,765.12 and 340,155.52

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Solution

The fourth proportional to 626,634.88, 864,765.12 and 340,155.52 is: 469,419.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,634.88 : 864,765.12 = 340,155.52 : x
  2. Step 2: Convert to fraction form
    626,634.88/864,765.12 = 340,155.52/x
  3. Step 3: Cross multiply
    626,634.88x = 864,765.12 × 340,155.52
  4. Step 4: Simplify right side
    626,634.88x = 294,154,629,071.46
  5. Step 5: Solve for x
    x = 294,154,629,071.46/626,634.88
  6. Step 6: Final answer
    x = 469,419.50

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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.