Home / 878,386.20-1,317,579.30-789,812.70

Finding the Fourth Proportional to 878,386.20, 1,317,579.30 and 789,812.70

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Solution

The fourth proportional to 878,386.20, 1,317,579.30 and 789,812.70 is: 1,184,719.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,386.20 : 1,317,579.30 = 789,812.70 : x
  2. Step 2: Convert to fraction form
    878,386.20/1,317,579.30 = 789,812.70/x
  3. Step 3: Cross multiply
    878,386.20x = 1,317,579.30 × 789,812.70
  4. Step 4: Simplify right side
    878,386.20x = 1,040,640,864,397.11
  5. Step 5: Solve for x
    x = 1,040,640,864,397.11/878,386.20
  6. Step 6: Final answer
    x = 1,184,719.05

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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.