Home / 831,856.20-1,248,216.30-388,624.20

Finding the Fourth Proportional to 831,856.20, 1,248,216.30 and 388,624.20

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Solution

The fourth proportional to 831,856.20, 1,248,216.30 and 388,624.20 is: 583,138.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,856.20 : 1,248,216.30 = 388,624.20 : x
  2. Step 2: Convert to fraction form
    831,856.20/1,248,216.30 = 388,624.20/x
  3. Step 3: Cross multiply
    831,856.20x = 1,248,216.30 × 388,624.20
  4. Step 4: Simplify right side
    831,856.20x = 485,087,061,014.46
  5. Step 5: Solve for x
    x = 485,087,061,014.46/831,856.20
  6. Step 6: Final answer
    x = 583,138.12

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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.