Home / 1,587,991.57-2,191,441.73-862,839.30

Finding the Fourth Proportional to 1,587,991.57, 2,191,441.73 and 862,839.30

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Solution

The fourth proportional to 1,587,991.57, 2,191,441.73 and 862,839.30 is: 1,190,725.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587,991.57 : 2,191,441.73 = 862,839.30 : x
  2. Step 2: Convert to fraction form
    1,587,991.57/2,191,441.73 = 862,839.30/x
  3. Step 3: Cross multiply
    1,587,991.57x = 2,191,441.73 × 862,839.30
  4. Step 4: Simplify right side
    1,587,991.57x = 1,890,862,048,303.99
  5. Step 5: Solve for x
    x = 1,890,862,048,303.99/1,587,991.57
  6. Step 6: Final answer
    x = 1,190,725.50

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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.