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Finding the Fourth Proportional to 870,879.96, 1,201,813.48 and 488,907.44

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Solution

The fourth proportional to 870,879.96, 1,201,813.48 and 488,907.44 is: 674,691.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,879.96 : 1,201,813.48 = 488,907.44 : x
  2. Step 2: Convert to fraction form
    870,879.96/1,201,813.48 = 488,907.44/x
  3. Step 3: Cross multiply
    870,879.96x = 1,201,813.48 × 488,907.44
  4. Step 4: Simplify right side
    870,879.96x = 587,575,551,864.29
  5. Step 5: Solve for x
    x = 587,575,551,864.29/870,879.96
  6. Step 6: Final answer
    x = 674,691.78

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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.