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Finding the Fourth Proportional to 486,873.91, 671,770.84 and 282,803.58

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Solution

The fourth proportional to 486,873.91, 671,770.84 and 282,803.58 is: 390,202.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,873.91 : 671,770.84 = 282,803.58 : x
  2. Step 2: Convert to fraction form
    486,873.91/671,770.84 = 282,803.58/x
  3. Step 3: Cross multiply
    486,873.91x = 671,770.84 × 282,803.58
  4. Step 4: Simplify right side
    486,873.91x = 189,979,198,491.61
  5. Step 5: Solve for x
    x = 189,979,198,491.61/486,873.91
  6. Step 6: Final answer
    x = 390,202.05

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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.