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Finding the Fourth Proportional to 764,706.60, 1,144,727.10 and 680,725.80

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Solution

The fourth proportional to 764,706.60, 1,144,727.10 and 680,725.80 is: 1,019,012.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,706.60 : 1,144,727.10 = 680,725.80 : x
  2. Step 2: Convert to fraction form
    764,706.60/1,144,727.10 = 680,725.80/x
  3. Step 3: Cross multiply
    764,706.60x = 1,144,727.10 × 680,725.80
  4. Step 4: Simplify right side
    764,706.60x = 779,245,270,929.18
  5. Step 5: Solve for x
    x = 779,245,270,929.18/764,706.60
  6. Step 6: Final answer
    x = 1,019,012.09

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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.