Home / 1,387,018.14-1,913,544.37-870,470.61

Finding the Fourth Proportional to 1,387,018.14, 1,913,544.37 and 870,470.61

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Solution

The fourth proportional to 1,387,018.14, 1,913,544.37 and 870,470.61 is: 1,200,910.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,018.14 : 1,913,544.37 = 870,470.61 : x
  2. Step 2: Convert to fraction form
    1,387,018.14/1,913,544.37 = 870,470.61/x
  3. Step 3: Cross multiply
    1,387,018.14x = 1,913,544.37 × 870,470.61
  4. Step 4: Simplify right side
    1,387,018.14x = 1,665,684,135,015.97
  5. Step 5: Solve for x
    x = 1,665,684,135,015.97/1,387,018.14
  6. Step 6: Final answer
    x = 1,200,910.13

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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.