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Finding the Fourth Proportional to 638,672.51, 881,355.80 and 352,219.07

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Solution

The fourth proportional to 638,672.51, 881,355.80 and 352,219.07 is: 486,055.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,672.51 : 881,355.80 = 352,219.07 : x
  2. Step 2: Convert to fraction form
    638,672.51/881,355.80 = 352,219.07/x
  3. Step 3: Cross multiply
    638,672.51x = 881,355.80 × 352,219.07
  4. Step 4: Simplify right side
    638,672.51x = 310,430,318,454.01
  5. Step 5: Solve for x
    x = 310,430,318,454.01/638,672.51
  6. Step 6: Final answer
    x = 486,055.55

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.