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Finding the Fourth Proportional to 870,852.78, 1,201,694.67 and 488,804.94

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Solution

The fourth proportional to 870,852.78, 1,201,694.67 and 488,804.94 is: 674,504.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,852.78 : 1,201,694.67 = 488,804.94 : x
  2. Step 2: Convert to fraction form
    870,852.78/1,201,694.67 = 488,804.94/x
  3. Step 3: Cross multiply
    870,852.78x = 1,201,694.67 × 488,804.94
  4. Step 4: Simplify right side
    870,852.78x = 587,394,291,067.67
  5. Step 5: Solve for x
    x = 587,394,291,067.67/870,852.78
  6. Step 6: Final answer
    x = 674,504.70

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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.