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Finding the Fourth Proportional to 710,150.25, 979,992.18 and 387,861.65

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Solution

The fourth proportional to 710,150.25, 979,992.18 and 387,861.65 is: 535,240.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,150.25 : 979,992.18 = 387,861.65 : x
  2. Step 2: Convert to fraction form
    710,150.25/979,992.18 = 387,861.65/x
  3. Step 3: Cross multiply
    710,150.25x = 979,992.18 × 387,861.65
  4. Step 4: Simplify right side
    710,150.25x = 380,101,379,021.94
  5. Step 5: Solve for x
    x = 380,101,379,021.94/710,150.25
  6. Step 6: Final answer
    x = 535,240.79

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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.