Home / 787,131.58-1,086,229.03-438,268.63

Finding the Fourth Proportional to 787,131.58, 1,086,229.03 and 438,268.63

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Solution

The fourth proportional to 787,131.58, 1,086,229.03 and 438,268.63 is: 604,803.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,131.58 : 1,086,229.03 = 438,268.63 : x
  2. Step 2: Convert to fraction form
    787,131.58/1,086,229.03 = 438,268.63/x
  3. Step 3: Cross multiply
    787,131.58x = 1,086,229.03 × 438,268.63
  4. Step 4: Simplify right side
    787,131.58x = 476,060,103,413.18
  5. Step 5: Solve for x
    x = 476,060,103,413.18/787,131.58
  6. Step 6: Final answer
    x = 604,803.72

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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.