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Finding the Fourth Proportional to 638,847.64, 881,606.16 and 352,367.08

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Solution

The fourth proportional to 638,847.64, 881,606.16 and 352,367.08 is: 486,264.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,847.64 : 881,606.16 = 352,367.08 : x
  2. Step 2: Convert to fraction form
    638,847.64/881,606.16 = 352,367.08/x
  3. Step 3: Cross multiply
    638,847.64x = 881,606.16 × 352,367.08
  4. Step 4: Simplify right side
    638,847.64x = 310,648,988,309.21
  5. Step 5: Solve for x
    x = 310,648,988,309.21/638,847.64
  6. Step 6: Final answer
    x = 486,264.59

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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.