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Finding the Fourth Proportional to 666,480.80, 998,846.40 and 266,794.40

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Solution

The fourth proportional to 666,480.80, 998,846.40 and 266,794.40 is: 399,841.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,480.80 : 998,846.40 = 266,794.40 : x
  2. Step 2: Convert to fraction form
    666,480.80/998,846.40 = 266,794.40/x
  3. Step 3: Cross multiply
    666,480.80x = 998,846.40 × 266,794.40
  4. Step 4: Simplify right side
    666,480.80x = 266,486,625,980.16
  5. Step 5: Solve for x
    x = 266,486,625,980.16/666,480.80
  6. Step 6: Final answer
    x = 399,841.41

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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.