Home / 717,849.58-990,676.44-395,559.76

Finding the Fourth Proportional to 717,849.58, 990,676.44 and 395,559.76

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Solution

The fourth proportional to 717,849.58, 990,676.44 and 395,559.76 is: 545,896.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,849.58 : 990,676.44 = 395,559.76 : x
  2. Step 2: Convert to fraction form
    717,849.58/990,676.44 = 395,559.76/x
  3. Step 3: Cross multiply
    717,849.58x = 990,676.44 × 395,559.76
  4. Step 4: Simplify right side
    717,849.58x = 391,871,734,844.05
  5. Step 5: Solve for x
    x = 391,871,734,844.05/717,849.58
  6. Step 6: Final answer
    x = 545,896.73

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Double scale
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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.