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Finding the Fourth Proportional to 666,894.90, 1,000,306.71 and 187,155.30

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Solution

The fourth proportional to 666,894.90, 1,000,306.71 and 187,155.30 is: 280,722.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,894.90 : 1,000,306.71 = 187,155.30 : x
  2. Step 2: Convert to fraction form
    666,894.90/1,000,306.71 = 187,155.30/x
  3. Step 3: Cross multiply
    666,894.90x = 1,000,306.71 × 187,155.30
  4. Step 4: Simplify right side
    666,894.90x = 187,212,702,402.06
  5. Step 5: Solve for x
    x = 187,212,702,402.06/666,894.90
  6. Step 6: Final answer
    x = 280,722.95

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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.