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Finding the Fourth Proportional to 496,889.38, 686,133.54 and 480,821.59

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Solution

The fourth proportional to 496,889.38, 686,133.54 and 480,821.59 is: 663,946.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,889.38 : 686,133.54 = 480,821.59 : x
  2. Step 2: Convert to fraction form
    496,889.38/686,133.54 = 480,821.59/x
  3. Step 3: Cross multiply
    496,889.38x = 686,133.54 × 480,821.59
  4. Step 4: Simplify right side
    496,889.38x = 329,907,823,794.85
  5. Step 5: Solve for x
    x = 329,907,823,794.85/496,889.38
  6. Step 6: Final answer
    x = 663,946.22

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Half scale
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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.