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Finding the Fourth Proportional to 493,368.33, 680,867.86 and 278,515.83

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Solution

The fourth proportional to 493,368.33, 680,867.86 and 278,515.83 is: 384,362.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,368.33 : 680,867.86 = 278,515.83 : x
  2. Step 2: Convert to fraction form
    493,368.33/680,867.86 = 278,515.83/x
  3. Step 3: Cross multiply
    493,368.33x = 680,867.86 × 278,515.83
  4. Step 4: Simplify right side
    493,368.33x = 189,632,479,527.41
  5. Step 5: Solve for x
    x = 189,632,479,527.41/493,368.33
  6. Step 6: Final answer
    x = 384,362.89

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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.