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Finding the Fourth Proportional to 666,069.84, 999,252.18 and 310,889.88

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Solution

The fourth proportional to 666,069.84, 999,252.18 and 310,889.88 is: 466,403.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,069.84 : 999,252.18 = 310,889.88 : x
  2. Step 2: Convert to fraction form
    666,069.84/999,252.18 = 310,889.88/x
  3. Step 3: Cross multiply
    666,069.84x = 999,252.18 × 310,889.88
  4. Step 4: Simplify right side
    666,069.84x = 310,657,390,329.94
  5. Step 5: Solve for x
    x = 310,657,390,329.94/666,069.84
  6. Step 6: Final answer
    x = 466,403.63

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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.