Home / 831,793.20-1,248,121.80-388,561.20

Finding the Fourth Proportional to 831,793.20, 1,248,121.80 and 388,561.20

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Solution

The fourth proportional to 831,793.20, 1,248,121.80 and 388,561.20 is: 583,043.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,793.20 : 1,248,121.80 = 388,561.20 : x
  2. Step 2: Convert to fraction form
    831,793.20/1,248,121.80 = 388,561.20/x
  3. Step 3: Cross multiply
    831,793.20x = 1,248,121.80 × 388,561.20
  4. Step 4: Simplify right side
    831,793.20x = 484,971,704,354.16
  5. Step 5: Solve for x
    x = 484,971,704,354.16/831,793.20
  6. Step 6: Final answer
    x = 583,043.60

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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.