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Finding the Fourth Proportional to 666,418.60, 999,336.30 and 266,926.60

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Solution

The fourth proportional to 666,418.60, 999,336.30 and 266,926.60 is: 400,273.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,418.60 : 999,336.30 = 266,926.60 : x
  2. Step 2: Convert to fraction form
    666,418.60/999,336.30 = 266,926.60/x
  3. Step 3: Cross multiply
    666,418.60x = 999,336.30 × 266,926.60
  4. Step 4: Simplify right side
    666,418.60x = 266,749,440,815.58
  5. Step 5: Solve for x
    x = 266,749,440,815.58/666,418.60
  6. Step 6: Final answer
    x = 400,273.10

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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.