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Finding the Fourth Proportional to 638,494.22, 881,128.14 and 352,024.58

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Solution

The fourth proportional to 638,494.22, 881,128.14 and 352,024.58 is: 485,797.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,494.22 : 881,128.14 = 352,024.58 : x
  2. Step 2: Convert to fraction form
    638,494.22/881,128.14 = 352,024.58/x
  3. Step 3: Cross multiply
    638,494.22x = 881,128.14 × 352,024.58
  4. Step 4: Simplify right side
    638,494.22x = 310,178,763,409.68
  5. Step 5: Solve for x
    x = 310,178,763,409.68/638,494.22
  6. Step 6: Final answer
    x = 485,797.29

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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.