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Finding the Fourth Proportional to 710,150.50, 979,992.52 and 387,861.90

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Solution

The fourth proportional to 710,150.50, 979,992.52 and 387,861.90 is: 535,241.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,150.50 : 979,992.52 = 387,861.90 : x
  2. Step 2: Convert to fraction form
    710,150.50/979,992.52 = 387,861.90/x
  3. Step 3: Cross multiply
    710,150.50x = 979,992.52 × 387,861.90
  4. Step 4: Simplify right side
    710,150.50x = 380,101,760,792.99
  5. Step 5: Solve for x
    x = 380,101,760,792.99/710,150.50
  6. Step 6: Final answer
    x = 535,241.14

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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.