Home / 918,716.30-1,378,354.20-469,752.54

Finding the Fourth Proportional to 918,716.30, 1,378,354.20 and 469,752.54

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Solution

The fourth proportional to 918,716.30, 1,378,354.20 and 469,752.54 is: 704,771.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,716.30 : 1,378,354.20 = 469,752.54 : x
  2. Step 2: Convert to fraction form
    918,716.30/1,378,354.20 = 469,752.54/x
  3. Step 3: Cross multiply
    918,716.30x = 1,378,354.20 × 469,752.54
  4. Step 4: Simplify right side
    918,716.30x = 647,485,386,469.67
  5. Step 5: Solve for x
    x = 647,485,386,469.67/918,716.30
  6. Step 6: Final answer
    x = 704,771.85

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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.