Home / 878,563.20-1,317,844.80-213,715.20

Finding the Fourth Proportional to 878,563.20, 1,317,844.80 and 213,715.20

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Solution

The fourth proportional to 878,563.20, 1,317,844.80 and 213,715.20 is: 320,572.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,563.20 : 1,317,844.80 = 213,715.20 : x
  2. Step 2: Convert to fraction form
    878,563.20/1,317,844.80 = 213,715.20/x
  3. Step 3: Cross multiply
    878,563.20x = 1,317,844.80 × 213,715.20
  4. Step 4: Simplify right side
    878,563.20x = 281,643,465,000.96
  5. Step 5: Solve for x
    x = 281,643,465,000.96/878,563.20
  6. Step 6: Final answer
    x = 320,572.80

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1.5x scale

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.