Home / 808,901.20-1,213,351.80-509,719.60

Finding the Fourth Proportional to 808,901.20, 1,213,351.80 and 509,719.60

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Solution

The fourth proportional to 808,901.20, 1,213,351.80 and 509,719.60 is: 764,579.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,901.20 : 1,213,351.80 = 509,719.60 : x
  2. Step 2: Convert to fraction form
    808,901.20/1,213,351.80 = 509,719.60/x
  3. Step 3: Cross multiply
    808,901.20x = 1,213,351.80 × 509,719.60
  4. Step 4: Simplify right side
    808,901.20x = 618,469,194,155.28
  5. Step 5: Solve for x
    x = 618,469,194,155.28/808,901.20
  6. Step 6: Final answer
    x = 764,579.40

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Double scale
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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.