Home / 689,424.40-1,034,719.80-310,927.60

Finding the Fourth Proportional to 689,424.40, 1,034,719.80 and 310,927.60

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Solution

The fourth proportional to 689,424.40, 1,034,719.80 and 310,927.60 is: 466,654.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,424.40 : 1,034,719.80 = 310,927.60 : x
  2. Step 2: Convert to fraction form
    689,424.40/1,034,719.80 = 310,927.60/x
  3. Step 3: Cross multiply
    689,424.40x = 1,034,719.80 × 310,927.60
  4. Step 4: Simplify right side
    689,424.40x = 321,722,944,086.48
  5. Step 5: Solve for x
    x = 321,722,944,086.48/689,424.40
  6. Step 6: Final answer
    x = 466,654.42

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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.