Home / 831,618.30-1,247,427.45-768,632.70

Finding the Fourth Proportional to 831,618.30, 1,247,427.45 and 768,632.70

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Solution

The fourth proportional to 831,618.30, 1,247,427.45 and 768,632.70 is: 1,152,949.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,618.30 : 1,247,427.45 = 768,632.70 : x
  2. Step 2: Convert to fraction form
    831,618.30/1,247,427.45 = 768,632.70/x
  3. Step 3: Cross multiply
    831,618.30x = 1,247,427.45 × 768,632.70
  4. Step 4: Simplify right side
    831,618.30x = 958,813,528,947.62
  5. Step 5: Solve for x
    x = 958,813,528,947.62/831,618.30
  6. Step 6: Final answer
    x = 1,152,949.05

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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.