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Finding the Fourth Proportional to 870,843.42, 1,201,697.57 and 488,796.39

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Solution

The fourth proportional to 870,843.42, 1,201,697.57 and 488,796.39 is: 674,501.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,843.42 : 1,201,697.57 = 488,796.39 : x
  2. Step 2: Convert to fraction form
    870,843.42/1,201,697.57 = 488,796.39/x
  3. Step 3: Cross multiply
    870,843.42x = 1,201,697.57 × 488,796.39
  4. Step 4: Simplify right side
    870,843.42x = 587,385,435,309.76
  5. Step 5: Solve for x
    x = 587,385,435,309.76/870,843.42
  6. Step 6: Final answer
    x = 674,501.78

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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.