Home / 2,145,772.80-3,218,659.20-649,864.80

Finding the Fourth Proportional to 2,145,772.80, 3,218,659.20 and 649,864.80

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Solution

The fourth proportional to 2,145,772.80, 3,218,659.20 and 649,864.80 is: 974,797.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145,772.80 : 3,218,659.20 = 649,864.80 : x
  2. Step 2: Convert to fraction form
    2,145,772.80/3,218,659.20 = 649,864.80/x
  3. Step 3: Cross multiply
    2,145,772.80x = 3,218,659.20 × 649,864.80
  4. Step 4: Simplify right side
    2,145,772.80x = 2,091,693,317,276.16
  5. Step 5: Solve for x
    x = 2,091,693,317,276.16/2,145,772.80
  6. Step 6: Final answer
    x = 974,797.20

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Double scale
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Similar ratio
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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.