Home / 679,195.35-937,251.39-407,127.09

Finding the Fourth Proportional to 679,195.35, 937,251.39 and 407,127.09

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Solution

The fourth proportional to 679,195.35, 937,251.39 and 407,127.09 is: 561,812.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,195.35 : 937,251.39 = 407,127.09 : x
  2. Step 2: Convert to fraction form
    679,195.35/937,251.39 = 407,127.09/x
  3. Step 3: Cross multiply
    679,195.35x = 937,251.39 × 407,127.09
  4. Step 4: Simplify right side
    679,195.35x = 381,580,431,009.16
  5. Step 5: Solve for x
    x = 381,580,431,009.16/679,195.35
  6. Step 6: Final answer
    x = 561,812.49

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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.