Home / 1,398,169.58-1,929,455.69-786,322.17

Finding the Fourth Proportional to 1,398,169.58, 1,929,455.69 and 786,322.17

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Solution

The fourth proportional to 1,398,169.58, 1,929,455.69 and 786,322.17 is: 1,085,114.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,169.58 : 1,929,455.69 = 786,322.17 : x
  2. Step 2: Convert to fraction form
    1,398,169.58/1,929,455.69 = 786,322.17/x
  3. Step 3: Cross multiply
    1,398,169.58x = 1,929,455.69 × 786,322.17
  4. Step 4: Simplify right side
    1,398,169.58x = 1,517,173,781,148.04
  5. Step 5: Solve for x
    x = 1,517,173,781,148.04/1,398,169.58
  6. Step 6: Final answer
    x = 1,085,114.29

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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.