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Finding the Fourth Proportional to 561,945.92, 775,498.86 and 320,223.32

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Solution

The fourth proportional to 561,945.92, 775,498.86 and 320,223.32 is: 441,915.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,945.92 : 775,498.86 = 320,223.32 : x
  2. Step 2: Convert to fraction form
    561,945.92/775,498.86 = 320,223.32/x
  3. Step 3: Cross multiply
    561,945.92x = 775,498.86 × 320,223.32
  4. Step 4: Simplify right side
    561,945.92x = 248,332,819,605.42
  5. Step 5: Solve for x
    x = 248,332,819,605.42/561,945.92
  6. Step 6: Final answer
    x = 441,915.87

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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.