Home / 1,218,141.20-1,827,010.20-408,515.60

Finding the Fourth Proportional to 1,218,141.20, 1,827,010.20 and 408,515.60

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Solution

The fourth proportional to 1,218,141.20, 1,827,010.20 and 408,515.60 is: 612,705.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,141.20 : 1,827,010.20 = 408,515.60 : x
  2. Step 2: Convert to fraction form
    1,218,141.20/1,827,010.20 = 408,515.60/x
  3. Step 3: Cross multiply
    1,218,141.20x = 1,827,010.20 × 408,515.60
  4. Step 4: Simplify right side
    1,218,141.20x = 746,362,168,059.12
  5. Step 5: Solve for x
    x = 746,362,168,059.12/1,218,141.20
  6. Step 6: Final answer
    x = 612,705.79

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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.