Home / 878,422.20-1,317,698.10-317,383.80

Finding the Fourth Proportional to 878,422.20, 1,317,698.10 and 317,383.80

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Solution

The fourth proportional to 878,422.20, 1,317,698.10 and 317,383.80 is: 476,099.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,422.20 : 1,317,698.10 = 317,383.80 : x
  2. Step 2: Convert to fraction form
    878,422.20/1,317,698.10 = 317,383.80/x
  3. Step 3: Cross multiply
    878,422.20x = 1,317,698.10 × 317,383.80
  4. Step 4: Simplify right side
    878,422.20x = 418,216,030,230.78
  5. Step 5: Solve for x
    x = 418,216,030,230.78/878,422.20
  6. Step 6: Final answer
    x = 476,099.11

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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.