Home / 547,917.30-821,875.95-378,905.94

Finding the Fourth Proportional to 547,917.30, 821,875.95 and 378,905.94

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Solution

The fourth proportional to 547,917.30, 821,875.95 and 378,905.94 is: 568,358.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,917.30 : 821,875.95 = 378,905.94 : x
  2. Step 2: Convert to fraction form
    547,917.30/821,875.95 = 378,905.94/x
  3. Step 3: Cross multiply
    547,917.30x = 821,875.95 × 378,905.94
  4. Step 4: Simplify right side
    547,917.30x = 311,413,679,398.14
  5. Step 5: Solve for x
    x = 311,413,679,398.14/547,917.30
  6. Step 6: Final answer
    x = 568,358.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.