Home / 878,471.80-1,317,707.70-869,140.60

Finding the Fourth Proportional to 878,471.80, 1,317,707.70 and 869,140.60

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Solution

The fourth proportional to 878,471.80, 1,317,707.70 and 869,140.60 is: 1,303,710.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,471.80 : 1,317,707.70 = 869,140.60 : x
  2. Step 2: Convert to fraction form
    878,471.80/1,317,707.70 = 869,140.60/x
  3. Step 3: Cross multiply
    878,471.80x = 1,317,707.70 × 869,140.60
  4. Step 4: Simplify right side
    878,471.80x = 1,145,273,261,002.62
  5. Step 5: Solve for x
    x = 1,145,273,261,002.62/878,471.80
  6. Step 6: Final answer
    x = 1,303,710.90

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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.