Home / 1,040,249.40-1,560,374.10-919,980.60

Finding the Fourth Proportional to 1,040,249.40, 1,560,374.10 and 919,980.60

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Solution

The fourth proportional to 1,040,249.40, 1,560,374.10 and 919,980.60 is: 1,379,970.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,249.40 : 1,560,374.10 = 919,980.60 : x
  2. Step 2: Convert to fraction form
    1,040,249.40/1,560,374.10 = 919,980.60/x
  3. Step 3: Cross multiply
    1,040,249.40x = 1,560,374.10 × 919,980.60
  4. Step 4: Simplify right side
    1,040,249.40x = 1,435,513,900,742.46
  5. Step 5: Solve for x
    x = 1,435,513,900,742.46/1,040,249.40
  6. Step 6: Final answer
    x = 1,379,970.90

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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.