Home / 1,398,683.31-1,930,180.11-786,836.51

Finding the Fourth Proportional to 1,398,683.31, 1,930,180.11 and 786,836.51

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Solution

The fourth proportional to 1,398,683.31, 1,930,180.11 and 786,836.51 is: 1,085,832.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,683.31 : 1,930,180.11 = 786,836.51 : x
  2. Step 2: Convert to fraction form
    1,398,683.31/1,930,180.11 = 786,836.51/x
  3. Step 3: Cross multiply
    1,398,683.31x = 1,930,180.11 × 786,836.51
  4. Step 4: Simplify right side
    1,398,683.31x = 1,518,736,181,423.82
  5. Step 5: Solve for x
    x = 1,518,736,181,423.82/1,398,683.31
  6. Step 6: Final answer
    x = 1,085,832.78

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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.