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Finding the Fourth Proportional to 675,172.71, 927,841.55 and 643,949.64

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Solution

The fourth proportional to 675,172.71, 927,841.55 and 643,949.64 is: 884,933.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,172.71 : 927,841.55 = 643,949.64 : x
  2. Step 2: Convert to fraction form
    675,172.71/927,841.55 = 643,949.64/x
  3. Step 3: Cross multiply
    675,172.71x = 927,841.55 × 643,949.64
  4. Step 4: Simplify right side
    675,172.71x = 597,483,228,879.79
  5. Step 5: Solve for x
    x = 597,483,228,879.79/675,172.71
  6. Step 6: Final answer
    x = 884,933.91

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These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.