Home / 690,974.36-1,036,461.54-395,279

Finding the Fourth Proportional to 690,974.36, 1,036,461.54 and 395,279

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Solution

The fourth proportional to 690,974.36, 1,036,461.54 and 395,279 is: 592,918.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,974.36 : 1,036,461.54 = 395,279 : x
  2. Step 2: Convert to fraction form
    690,974.36/1,036,461.54 = 395,279/x
  3. Step 3: Cross multiply
    690,974.36x = 1,036,461.54 × 395,279
  4. Step 4: Simplify right side
    690,974.36x = 409,691,481,069.66
  5. Step 5: Solve for x
    x = 409,691,481,069.66/690,974.36
  6. Step 6: Final answer
    x = 592,918.50

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Similar ratio
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1.5x scale

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.