Home / 619,974.48-855,968.20-378,397.10

Finding the Fourth Proportional to 619,974.48, 855,968.20 and 378,397.10

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Solution

The fourth proportional to 619,974.48, 855,968.20 and 378,397.10 is: 522,434.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,974.48 : 855,968.20 = 378,397.10 : x
  2. Step 2: Convert to fraction form
    619,974.48/855,968.20 = 378,397.10/x
  3. Step 3: Cross multiply
    619,974.48x = 855,968.20 × 378,397.10
  4. Step 4: Simplify right side
    619,974.48x = 323,895,884,572.22
  5. Step 5: Solve for x
    x = 323,895,884,572.22/619,974.48
  6. Step 6: Final answer
    x = 522,434.22

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Double scale
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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.