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Finding the Fourth Proportional to 482,800.91, 666,110.99 and 278,824.88

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Solution

The fourth proportional to 482,800.91, 666,110.99 and 278,824.88 is: 384,689.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,800.91 : 666,110.99 = 278,824.88 : x
  2. Step 2: Convert to fraction form
    482,800.91/666,110.99 = 278,824.88/x
  3. Step 3: Cross multiply
    482,800.91x = 666,110.99 × 278,824.88
  4. Step 4: Simplify right side
    482,800.91x = 185,728,319,215.77
  5. Step 5: Solve for x
    x = 185,728,319,215.77/482,800.91
  6. Step 6: Final answer
    x = 384,689.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.