Home / 831,617.60-1,247,426.40-820,558.40

Finding the Fourth Proportional to 831,617.60, 1,247,426.40 and 820,558.40

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Solution

The fourth proportional to 831,617.60, 1,247,426.40 and 820,558.40 is: 1,230,837.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,617.60 : 1,247,426.40 = 820,558.40 : x
  2. Step 2: Convert to fraction form
    831,617.60/1,247,426.40 = 820,558.40/x
  3. Step 3: Cross multiply
    831,617.60x = 1,247,426.40 × 820,558.40
  4. Step 4: Simplify right side
    831,617.60x = 1,023,586,210,901.76
  5. Step 5: Solve for x
    x = 1,023,586,210,901.76/831,617.60
  6. Step 6: Final answer
    x = 1,230,837.60

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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.