Home / 1,143,705.09-1,715,059.29-385,405.21

Finding the Fourth Proportional to 1,143,705.09, 1,715,059.29 and 385,405.21

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Solution

The fourth proportional to 1,143,705.09, 1,715,059.29 and 385,405.21 is: 577,939.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143,705.09 : 1,715,059.29 = 385,405.21 : x
  2. Step 2: Convert to fraction form
    1,143,705.09/1,715,059.29 = 385,405.21/x
  3. Step 3: Cross multiply
    1,143,705.09x = 1,715,059.29 × 385,405.21
  4. Step 4: Simplify right side
    1,143,705.09x = 660,992,785,824.90
  5. Step 5: Solve for x
    x = 660,992,785,824.90/1,143,705.09
  6. Step 6: Final answer
    x = 577,939.88

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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.