Home / 679,935.43-938,311.85-378,129.43

Finding the Fourth Proportional to 679,935.43, 938,311.85 and 378,129.43

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Solution

The fourth proportional to 679,935.43, 938,311.85 and 378,129.43 is: 521,819.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,935.43 : 938,311.85 = 378,129.43 : x
  2. Step 2: Convert to fraction form
    679,935.43/938,311.85 = 378,129.43/x
  3. Step 3: Cross multiply
    679,935.43x = 938,311.85 × 378,129.43
  4. Step 4: Simplify right side
    679,935.43x = 354,803,323,112.10
  5. Step 5: Solve for x
    x = 354,803,323,112.10/679,935.43
  6. Step 6: Final answer
    x = 521,819.14

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1.5x scale

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.