Home / 1,238,530.20-1,861,994.70-988,998.36

Finding the Fourth Proportional to 1,238,530.20, 1,861,994.70 and 988,998.36

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Solution

The fourth proportional to 1,238,530.20, 1,861,994.70 and 988,998.36 is: 1,486,850.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,530.20 : 1,861,994.70 = 988,998.36 : x
  2. Step 2: Convert to fraction form
    1,238,530.20/1,861,994.70 = 988,998.36/x
  3. Step 3: Cross multiply
    1,238,530.20x = 1,861,994.70 × 988,998.36
  4. Step 4: Simplify right side
    1,238,530.20x = 1,841,509,704,628.69
  5. Step 5: Solve for x
    x = 1,841,509,704,628.69/1,238,530.20
  6. Step 6: Final answer
    x = 1,486,850.87

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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.