Home / 979,838.61-1,469,379.97-380,720.89

Finding the Fourth Proportional to 979,838.61, 1,469,379.97 and 380,720.89

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Solution

The fourth proportional to 979,838.61, 1,469,379.97 and 380,720.89 is: 570,934.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,838.61 : 1,469,379.97 = 380,720.89 : x
  2. Step 2: Convert to fraction form
    979,838.61/1,469,379.97 = 380,720.89/x
  3. Step 3: Cross multiply
    979,838.61x = 1,469,379.97 × 380,720.89
  4. Step 4: Simplify right side
    979,838.61x = 559,423,649,926.57
  5. Step 5: Solve for x
    x = 559,423,649,926.57/979,838.61
  6. Step 6: Final answer
    x = 570,934.48

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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.