Home / 1,188,115.86-1,639,603.71-644,251.26

Finding the Fourth Proportional to 1,188,115.86, 1,639,603.71 and 644,251.26

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Solution

The fourth proportional to 1,188,115.86, 1,639,603.71 and 644,251.26 is: 889,068.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,115.86 : 1,639,603.71 = 644,251.26 : x
  2. Step 2: Convert to fraction form
    1,188,115.86/1,639,603.71 = 644,251.26/x
  3. Step 3: Cross multiply
    1,188,115.86x = 1,639,603.71 × 644,251.26
  4. Step 4: Simplify right side
    1,188,115.86x = 1,056,316,756,068.17
  5. Step 5: Solve for x
    x = 1,056,316,756,068.17/1,188,115.86
  6. Step 6: Final answer
    x = 889,068.81

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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.