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Finding the Fourth Proportional to 828,698.70, 1,243,048.05 and 468,499.80

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Solution

The fourth proportional to 828,698.70, 1,243,048.05 and 468,499.80 is: 702,749.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,698.70 : 1,243,048.05 = 468,499.80 : x
  2. Step 2: Convert to fraction form
    828,698.70/1,243,048.05 = 468,499.80/x
  3. Step 3: Cross multiply
    828,698.70x = 1,243,048.05 × 468,499.80
  4. Step 4: Simplify right side
    828,698.70x = 582,367,762,815.39
  5. Step 5: Solve for x
    x = 582,367,762,815.39/828,698.70
  6. Step 6: Final answer
    x = 702,749.70

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.