Home / 987,510.60-1,481,634.79-388,889.01

Finding the Fourth Proportional to 987,510.60, 1,481,634.79 and 388,889.01

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Solution

The fourth proportional to 987,510.60, 1,481,634.79 and 388,889.01 is: 583,478.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,510.60 : 1,481,634.79 = 388,889.01 : x
  2. Step 2: Convert to fraction form
    987,510.60/1,481,634.79 = 388,889.01/x
  3. Step 3: Cross multiply
    987,510.60x = 1,481,634.79 × 388,889.01
  4. Step 4: Simplify right side
    987,510.60x = 576,191,485,692.44
  5. Step 5: Solve for x
    x = 576,191,485,692.44/987,510.60
  6. Step 6: Final answer
    x = 583,478.79

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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.