Home / 519,867.77-717,118.23-312,992.36

Finding the Fourth Proportional to 519,867.77, 717,118.23 and 312,992.36

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Solution

The fourth proportional to 519,867.77, 717,118.23 and 312,992.36 is: 431,749.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,867.77 : 717,118.23 = 312,992.36 : x
  2. Step 2: Convert to fraction form
    519,867.77/717,118.23 = 312,992.36/x
  3. Step 3: Cross multiply
    519,867.77x = 717,118.23 × 312,992.36
  4. Step 4: Simplify right side
    519,867.77x = 224,452,527,206.72
  5. Step 5: Solve for x
    x = 224,452,527,206.72/519,867.77
  6. Step 6: Final answer
    x = 431,749.26

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Double scale
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Similar ratio
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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.