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Finding the Fourth Proportional to 870,672.60, 1,201,462.26 and 488,625.57

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Solution

The fourth proportional to 870,672.60, 1,201,462.26 and 488,625.57 is: 674,266.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,672.60 : 1,201,462.26 = 488,625.57 : x
  2. Step 2: Convert to fraction form
    870,672.60/1,201,462.26 = 488,625.57/x
  3. Step 3: Cross multiply
    870,672.60x = 1,201,462.26 × 488,625.57
  4. Step 4: Simplify right side
    870,672.60x = 587,065,181,625.99
  5. Step 5: Solve for x
    x = 587,065,181,625.99/870,672.60
  6. Step 6: Final answer
    x = 674,266.29

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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.