Home / 991,987.56-1,369,049.85-562,221.54

Finding the Fourth Proportional to 991,987.56, 1,369,049.85 and 562,221.54

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Solution

The fourth proportional to 991,987.56, 1,369,049.85 and 562,221.54 is: 775,926.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,987.56 : 1,369,049.85 = 562,221.54 : x
  2. Step 2: Convert to fraction form
    991,987.56/1,369,049.85 = 562,221.54/x
  3. Step 3: Cross multiply
    991,987.56x = 1,369,049.85 × 562,221.54
  4. Step 4: Simplify right side
    991,987.56x = 769,709,315,003.77
  5. Step 5: Solve for x
    x = 769,709,315,003.77/991,987.56
  6. Step 6: Final answer
    x = 775,926.38

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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.