Home / 405,287.92-559,365.36-274,406.20

Finding the Fourth Proportional to 405,287.92, 559,365.36 and 274,406.20

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Solution

The fourth proportional to 405,287.92, 559,365.36 and 274,406.20 is: 378,726.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,287.92 : 559,365.36 = 274,406.20 : x
  2. Step 2: Convert to fraction form
    405,287.92/559,365.36 = 274,406.20/x
  3. Step 3: Cross multiply
    405,287.92x = 559,365.36 × 274,406.20
  4. Step 4: Simplify right side
    405,287.92x = 153,493,322,849.23
  5. Step 5: Solve for x
    x = 153,493,322,849.23/405,287.92
  6. Step 6: Final answer
    x = 378,726.62

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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.