Home / 831,855.20-1,248,214.80-388,623.20

Finding the Fourth Proportional to 831,855.20, 1,248,214.80 and 388,623.20

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Solution

The fourth proportional to 831,855.20, 1,248,214.80 and 388,623.20 is: 583,136.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,855.20 : 1,248,214.80 = 388,623.20 : x
  2. Step 2: Convert to fraction form
    831,855.20/1,248,214.80 = 388,623.20/x
  3. Step 3: Cross multiply
    831,855.20x = 1,248,214.80 × 388,623.20
  4. Step 4: Simplify right side
    831,855.20x = 485,085,229,863.36
  5. Step 5: Solve for x
    x = 485,085,229,863.36/831,855.20
  6. Step 6: Final answer
    x = 583,136.62

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1.5x scale

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.