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Finding the Fourth Proportional to 561,728.69, 775,591.49 and 347,162.93

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Solution

The fourth proportional to 561,728.69, 775,591.49 and 347,162.93 is: 479,335.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,728.69 : 775,591.49 = 347,162.93 : x
  2. Step 2: Convert to fraction form
    561,728.69/775,591.49 = 347,162.93/x
  3. Step 3: Cross multiply
    561,728.69x = 775,591.49 × 347,162.93
  4. Step 4: Simplify right side
    561,728.69x = 269,256,614,151.47
  5. Step 5: Solve for x
    x = 269,256,614,151.47/561,728.69
  6. Step 6: Final answer
    x = 479,335.70

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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.