Home / 831,384.80-1,247,998.80-516,197.60

Finding the Fourth Proportional to 831,384.80, 1,247,998.80 and 516,197.60

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Solution

The fourth proportional to 831,384.80, 1,247,998.80 and 516,197.60 is: 774,868.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,384.80 : 1,247,998.80 = 516,197.60 : x
  2. Step 2: Convert to fraction form
    831,384.80/1,247,998.80 = 516,197.60/x
  3. Step 3: Cross multiply
    831,384.80x = 1,247,998.80 × 516,197.60
  4. Step 4: Simplify right side
    831,384.80x = 644,213,985,362.88
  5. Step 5: Solve for x
    x = 644,213,985,362.88/831,384.80
  6. Step 6: Final answer
    x = 774,868.61

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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.