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Finding the Fourth Proportional to 638,487.47, 881,112.43 and 366,572.90

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Solution

The fourth proportional to 638,487.47, 881,112.43 and 366,572.90 is: 505,870.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,487.47 : 881,112.43 = 366,572.90 : x
  2. Step 2: Convert to fraction form
    638,487.47/881,112.43 = 366,572.90/x
  3. Step 3: Cross multiply
    638,487.47x = 881,112.43 × 366,572.90
  4. Step 4: Simplify right side
    638,487.47x = 322,991,941,352.14
  5. Step 5: Solve for x
    x = 322,991,941,352.14/638,487.47
  6. Step 6: Final answer
    x = 505,870.44

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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.