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Finding the Fourth Proportional to 986,069, 1,479,107.80 and 312,153.60

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Solution

The fourth proportional to 986,069, 1,479,107.80 and 312,153.60 is: 468,231.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,069 : 1,479,107.80 = 312,153.60 : x
  2. Step 2: Convert to fraction form
    986,069/1,479,107.80 = 312,153.60/x
  3. Step 3: Cross multiply
    986,069x = 1,479,107.80 × 312,153.60
  4. Step 4: Simplify right side
    986,069x = 461,708,824,558.08
  5. Step 5: Solve for x
    x = 461,708,824,558.08/986,069
  6. Step 6: Final answer
    x = 468,231.76

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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.