Home / 787,051.72-1,086,126.30-447,519.94

Finding the Fourth Proportional to 787,051.72, 1,086,126.30 and 447,519.94

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Solution

The fourth proportional to 787,051.72, 1,086,126.30 and 447,519.94 is: 617,574.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,051.72 : 1,086,126.30 = 447,519.94 : x
  2. Step 2: Convert to fraction form
    787,051.72/1,086,126.30 = 447,519.94/x
  3. Step 3: Cross multiply
    787,051.72x = 1,086,126.30 × 447,519.94
  4. Step 4: Simplify right side
    787,051.72x = 486,063,176,608.42
  5. Step 5: Solve for x
    x = 486,063,176,608.42/787,051.72
  6. Step 6: Final answer
    x = 617,574.63

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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.