Home / 859,890.67-1,290,019.50-291,251.86

Finding the Fourth Proportional to 859,890.67, 1,290,019.50 and 291,251.86

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Solution

The fourth proportional to 859,890.67, 1,290,019.50 and 291,251.86 is: 436,939.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,890.67 : 1,290,019.50 = 291,251.86 : x
  2. Step 2: Convert to fraction form
    859,890.67/1,290,019.50 = 291,251.86/x
  3. Step 3: Cross multiply
    859,890.67x = 1,290,019.50 × 291,251.86
  4. Step 4: Simplify right side
    859,890.67x = 375,720,578,811.27
  5. Step 5: Solve for x
    x = 375,720,578,811.27/859,890.67
  6. Step 6: Final answer
    x = 436,939.94

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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.