Home / 646,895.25-892,721.55-356,517.45

Finding the Fourth Proportional to 646,895.25, 892,721.55 and 356,517.45

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Solution

The fourth proportional to 646,895.25, 892,721.55 and 356,517.45 is: 491,997.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,895.25 : 892,721.55 = 356,517.45 : x
  2. Step 2: Convert to fraction form
    646,895.25/892,721.55 = 356,517.45/x
  3. Step 3: Cross multiply
    646,895.25x = 892,721.55 × 356,517.45
  4. Step 4: Simplify right side
    646,895.25x = 318,270,810,566.05
  5. Step 5: Solve for x
    x = 318,270,810,566.05/646,895.25
  6. Step 6: Final answer
    x = 491,997.45

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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.