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Finding the Fourth Proportional to 870,593.63, 1,201,419.18 and 488,620.41

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Solution

The fourth proportional to 870,593.63, 1,201,419.18 and 488,620.41 is: 674,296.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,593.63 : 1,201,419.18 = 488,620.41 : x
  2. Step 2: Convert to fraction form
    870,593.63/1,201,419.18 = 488,620.41/x
  3. Step 3: Cross multiply
    870,593.63x = 1,201,419.18 × 488,620.41
  4. Step 4: Simplify right side
    870,593.63x = 587,037,927,808.14
  5. Step 5: Solve for x
    x = 587,037,927,808.14/870,593.63
  6. Step 6: Final answer
    x = 674,296.15

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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.