Home / 778,974.31-1,075,163.91-456,788.21

Finding the Fourth Proportional to 778,974.31, 1,075,163.91 and 456,788.21

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Solution

The fourth proportional to 778,974.31, 1,075,163.91 and 456,788.21 is: 630,472.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,974.31 : 1,075,163.91 = 456,788.21 : x
  2. Step 2: Convert to fraction form
    778,974.31/1,075,163.91 = 456,788.21/x
  3. Step 3: Cross multiply
    778,974.31x = 1,075,163.91 × 456,788.21
  4. Step 4: Simplify right side
    778,974.31x = 491,122,192,529.68
  5. Step 5: Solve for x
    x = 491,122,192,529.68/778,974.31
  6. Step 6: Final answer
    x = 630,472.90

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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.