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Finding the Fourth Proportional to 870,883.96, 1,201,818.96 and 488,911.48

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Solution

The fourth proportional to 870,883.96, 1,201,818.96 and 488,911.48 is: 674,697.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,883.96 : 1,201,818.96 = 488,911.48 : x
  2. Step 2: Convert to fraction form
    870,883.96/1,201,818.96 = 488,911.48/x
  3. Step 3: Cross multiply
    870,883.96x = 1,201,818.96 × 488,911.48
  4. Step 4: Simplify right side
    870,883.96x = 587,583,086,425.66
  5. Step 5: Solve for x
    x = 587,583,086,425.66/870,883.96
  6. Step 6: Final answer
    x = 674,697.33

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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.