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Finding the Fourth Proportional to 981,907.05, 1,355,018.79 and 552,187.05

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Solution

The fourth proportional to 981,907.05, 1,355,018.79 and 552,187.05 is: 762,010.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,907.05 : 1,355,018.79 = 552,187.05 : x
  2. Step 2: Convert to fraction form
    981,907.05/1,355,018.79 = 552,187.05/x
  3. Step 3: Cross multiply
    981,907.05x = 1,355,018.79 × 552,187.05
  4. Step 4: Simplify right side
    981,907.05x = 748,223,828,344.67
  5. Step 5: Solve for x
    x = 748,223,828,344.67/981,907.05
  6. Step 6: Final answer
    x = 762,010.85

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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.