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Finding the Fourth Proportional to 504,978.73, 696,873.05 and 278,624.23

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Solution

The fourth proportional to 504,978.73, 696,873.05 and 278,624.23 is: 384,502.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,978.73 : 696,873.05 = 278,624.23 : x
  2. Step 2: Convert to fraction form
    504,978.73/696,873.05 = 278,624.23/x
  3. Step 3: Cross multiply
    504,978.73x = 696,873.05 × 278,624.23
  4. Step 4: Simplify right side
    504,978.73x = 194,165,716,964.00
  5. Step 5: Solve for x
    x = 194,165,716,964.00/504,978.73
  6. Step 6: Final answer
    x = 384,502.76

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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.