Home / 1,549,989.05-2,138,817.41-861,690.50

Finding the Fourth Proportional to 1,549,989.05, 2,138,817.41 and 861,690.50

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Solution

The fourth proportional to 1,549,989.05, 2,138,817.41 and 861,690.50 is: 1,189,039.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,549,989.05 : 2,138,817.41 = 861,690.50 : x
  2. Step 2: Convert to fraction form
    1,549,989.05/2,138,817.41 = 861,690.50/x
  3. Step 3: Cross multiply
    1,549,989.05x = 2,138,817.41 × 861,690.50
  4. Step 4: Simplify right side
    1,549,989.05x = 1,842,998,628,429.07
  5. Step 5: Solve for x
    x = 1,842,998,628,429.07/1,549,989.05
  6. Step 6: Final answer
    x = 1,189,039.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.