Home / 811,910.13-1,216,910.21-331,841.76

Finding the Fourth Proportional to 811,910.13, 1,216,910.21 and 331,841.76

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Solution

The fourth proportional to 811,910.13, 1,216,910.21 and 331,841.76 is: 497,372.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,910.13 : 1,216,910.21 = 331,841.76 : x
  2. Step 2: Convert to fraction form
    811,910.13/1,216,910.21 = 331,841.76/x
  3. Step 3: Cross multiply
    811,910.13x = 1,216,910.21 × 331,841.76
  4. Step 4: Simplify right side
    811,910.13x = 403,821,624,189.16
  5. Step 5: Solve for x
    x = 403,821,624,189.16/811,910.13
  6. Step 6: Final answer
    x = 497,372.32

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1.5x scale

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.