Home / 880,131.40-1,319,322.30-405,989.80

Finding the Fourth Proportional to 880,131.40, 1,319,322.30 and 405,989.80

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Solution

The fourth proportional to 880,131.40, 1,319,322.30 and 405,989.80 is: 608,581.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,131.40 : 1,319,322.30 = 405,989.80 : x
  2. Step 2: Convert to fraction form
    880,131.40/1,319,322.30 = 405,989.80/x
  3. Step 3: Cross multiply
    880,131.40x = 1,319,322.30 × 405,989.80
  4. Step 4: Simplify right side
    880,131.40x = 535,631,396,712.54
  5. Step 5: Solve for x
    x = 535,631,396,712.54/880,131.40
  6. Step 6: Final answer
    x = 608,581.17

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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.