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Finding the Fourth Proportional to 809,459.84, 1,117,200.78 and 482,793.80

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Solution

The fourth proportional to 809,459.84, 1,117,200.78 and 482,793.80 is: 666,342.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,459.84 : 1,117,200.78 = 482,793.80 : x
  2. Step 2: Convert to fraction form
    809,459.84/1,117,200.78 = 482,793.80/x
  3. Step 3: Cross multiply
    809,459.84x = 1,117,200.78 × 482,793.80
  4. Step 4: Simplify right side
    809,459.84x = 539,377,609,939.16
  5. Step 5: Solve for x
    x = 539,377,609,939.16/809,459.84
  6. Step 6: Final answer
    x = 666,342.64

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.