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Finding the Fourth Proportional to 666,023.40, 999,035.10 and 266,725.80

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Solution

The fourth proportional to 666,023.40, 999,035.10 and 266,725.80 is: 400,088.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,023.40 : 999,035.10 = 266,725.80 : x
  2. Step 2: Convert to fraction form
    666,023.40/999,035.10 = 266,725.80/x
  3. Step 3: Cross multiply
    666,023.40x = 999,035.10 × 266,725.80
  4. Step 4: Simplify right side
    666,023.40x = 266,468,436,275.58
  5. Step 5: Solve for x
    x = 266,468,436,275.58/666,023.40
  6. Step 6: Final answer
    x = 400,088.70

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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.