Home / 1,398,714.28-1,930,044.10-786,846.36

Finding the Fourth Proportional to 1,398,714.28, 1,930,044.10 and 786,846.36

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Solution

The fourth proportional to 1,398,714.28, 1,930,044.10 and 786,846.36 is: 1,085,745.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,714.28 : 1,930,044.10 = 786,846.36 : x
  2. Step 2: Convert to fraction form
    1,398,714.28/1,930,044.10 = 786,846.36/x
  3. Step 3: Cross multiply
    1,398,714.28x = 1,930,044.10 × 786,846.36
  4. Step 4: Simplify right side
    1,398,714.28x = 1,518,648,174,724.48
  5. Step 5: Solve for x
    x = 1,518,648,174,724.48/1,398,714.28
  6. Step 6: Final answer
    x = 1,085,745.81

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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.