Home / 650,436.28-975,654.40-428,768.44

Finding the Fourth Proportional to 650,436.28, 975,654.40 and 428,768.44

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Solution

The fourth proportional to 650,436.28, 975,654.40 and 428,768.44 is: 643,152.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,436.28 : 975,654.40 = 428,768.44 : x
  2. Step 2: Convert to fraction form
    650,436.28/975,654.40 = 428,768.44/x
  3. Step 3: Cross multiply
    650,436.28x = 975,654.40 × 428,768.44
  4. Step 4: Simplify right side
    650,436.28x = 418,329,815,067.14
  5. Step 5: Solve for x
    x = 418,329,815,067.14/650,436.28
  6. Step 6: Final answer
    x = 643,152.65

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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.