Home / 656,388.38-905,816.79-354,582.38

Finding the Fourth Proportional to 656,388.38, 905,816.79 and 354,582.38

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Solution

The fourth proportional to 656,388.38, 905,816.79 and 354,582.38 is: 489,324.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,388.38 : 905,816.79 = 354,582.38 : x
  2. Step 2: Convert to fraction form
    656,388.38/905,816.79 = 354,582.38/x
  3. Step 3: Cross multiply
    656,388.38x = 905,816.79 × 354,582.38
  4. Step 4: Simplify right side
    656,388.38x = 321,186,668,713.08
  5. Step 5: Solve for x
    x = 321,186,668,713.08/656,388.38
  6. Step 6: Final answer
    x = 489,324.13

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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.