Home / 831,385.80-1,248,000.30-516,198.60

Finding the Fourth Proportional to 831,385.80, 1,248,000.30 and 516,198.60

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Solution

The fourth proportional to 831,385.80, 1,248,000.30 and 516,198.60 is: 774,870.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,385.80 : 1,248,000.30 = 516,198.60 : x
  2. Step 2: Convert to fraction form
    831,385.80/1,248,000.30 = 516,198.60/x
  3. Step 3: Cross multiply
    831,385.80x = 1,248,000.30 × 516,198.60
  4. Step 4: Simplify right side
    831,385.80x = 644,216,007,659.58
  5. Step 5: Solve for x
    x = 644,216,007,659.58/831,385.80
  6. Step 6: Final answer
    x = 774,870.11

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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.