Home / 838,651,337.10-1,257,965,195.85-378,588,768.30

Finding the Fourth Proportional to 838,651,337.10, 1,257,965,195.85 and 378,588,768.30

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Solution

The fourth proportional to 838,651,337.10, 1,257,965,195.85 and 378,588,768.30 is: 567,877,821.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,651,337.10 : 1,257,965,195.85 = 378,588,768.30 : x
  2. Step 2: Convert to fraction form
    838,651,337.10/1,257,965,195.85 = 378,588,768.30/x
  3. Step 3: Cross multiply
    838,651,337.10x = 1,257,965,195.85 × 378,588,768.30
  4. Step 4: Simplify right side
    838,651,337.10x = 476,251,494,061,119,744
  5. Step 5: Solve for x
    x = 476,251,494,061,119,744/838,651,337.10
  6. Step 6: Final answer
    x = 567,877,821.20

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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.