Home / 771,640.21-1,064,919.59-465,791.10

Finding the Fourth Proportional to 771,640.21, 1,064,919.59 and 465,791.10

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Solution

The fourth proportional to 771,640.21, 1,064,919.59 and 465,791.10 is: 642,825.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,640.21 : 1,064,919.59 = 465,791.10 : x
  2. Step 2: Convert to fraction form
    771,640.21/1,064,919.59 = 465,791.10/x
  3. Step 3: Cross multiply
    771,640.21x = 1,064,919.59 × 465,791.10
  4. Step 4: Simplify right side
    771,640.21x = 496,030,067,237.65
  5. Step 5: Solve for x
    x = 496,030,067,237.65/771,640.21
  6. Step 6: Final answer
    x = 642,825.58

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1.5x scale

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.