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Finding the Fourth Proportional to 666,461.70, 999,838.35 and 267,002.10

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Solution

The fourth proportional to 666,461.70, 999,838.35 and 267,002.10 is: 400,561.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,461.70 : 999,838.35 = 267,002.10 : x
  2. Step 2: Convert to fraction form
    666,461.70/999,838.35 = 267,002.10/x
  3. Step 3: Cross multiply
    666,461.70x = 999,838.35 × 267,002.10
  4. Step 4: Simplify right side
    666,461.70x = 266,958,939,110.54
  5. Step 5: Solve for x
    x = 266,958,939,110.54/666,461.70
  6. Step 6: Final answer
    x = 400,561.56

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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.