Home / 661,895.21-991,904.20-277,229.66

Finding the Fourth Proportional to 661,895.21, 991,904.20 and 277,229.66

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Solution

The fourth proportional to 661,895.21, 991,904.20 and 277,229.66 is: 415,451.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,895.21 : 991,904.20 = 277,229.66 : x
  2. Step 2: Convert to fraction form
    661,895.21/991,904.20 = 277,229.66/x
  3. Step 3: Cross multiply
    661,895.21x = 991,904.20 × 277,229.66
  4. Step 4: Simplify right side
    661,895.21x = 274,985,258,465.98
  5. Step 5: Solve for x
    x = 274,985,258,465.98/661,895.21
  6. Step 6: Final answer
    x = 415,451.35

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1.5x scale

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.