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Finding the Fourth Proportional to 638,925.80, 881,706.66 and 352,473.32

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Solution

The fourth proportional to 638,925.80, 881,706.66 and 352,473.32 is: 486,407.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,925.80 : 881,706.66 = 352,473.32 : x
  2. Step 2: Convert to fraction form
    638,925.80/881,706.66 = 352,473.32/x
  3. Step 3: Cross multiply
    638,925.80x = 881,706.66 × 352,473.32
  4. Step 4: Simplify right side
    638,925.80x = 310,778,073,716.31
  5. Step 5: Solve for x
    x = 310,778,073,716.31/638,925.80
  6. Step 6: Final answer
    x = 486,407.14

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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.