Home / 856,115.20-1,281,715.20-831,539.20

Finding the Fourth Proportional to 856,115.20, 1,281,715.20 and 831,539.20

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Solution

The fourth proportional to 856,115.20, 1,281,715.20 and 831,539.20 is: 1,244,921.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,115.20 : 1,281,715.20 = 831,539.20 : x
  2. Step 2: Convert to fraction form
    856,115.20/1,281,715.20 = 831,539.20/x
  3. Step 3: Cross multiply
    856,115.20x = 1,281,715.20 × 831,539.20
  4. Step 4: Simplify right side
    856,115.20x = 1,065,796,432,035.84
  5. Step 5: Solve for x
    x = 1,065,796,432,035.84/856,115.20
  6. Step 6: Final answer
    x = 1,244,921.75

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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.