Home / 987,439.20-1,481,158.80-828,006.90

Finding the Fourth Proportional to 987,439.20, 1,481,158.80 and 828,006.90

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Solution

The fourth proportional to 987,439.20, 1,481,158.80 and 828,006.90 is: 1,242,010.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,439.20 : 1,481,158.80 = 828,006.90 : x
  2. Step 2: Convert to fraction form
    987,439.20/1,481,158.80 = 828,006.90/x
  3. Step 3: Cross multiply
    987,439.20x = 1,481,158.80 × 828,006.90
  4. Step 4: Simplify right side
    987,439.20x = 1,226,409,706,395.72
  5. Step 5: Solve for x
    x = 1,226,409,706,395.72/987,439.20
  6. Step 6: Final answer
    x = 1,242,010.35

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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.