Home / 811,639.32-1,120,095.29-449,057.30

Finding the Fourth Proportional to 811,639.32, 1,120,095.29 and 449,057.30

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Solution

The fourth proportional to 811,639.32, 1,120,095.29 and 449,057.30 is: 619,717.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,639.32 : 1,120,095.29 = 449,057.30 : x
  2. Step 2: Convert to fraction form
    811,639.32/1,120,095.29 = 449,057.30/x
  3. Step 3: Cross multiply
    811,639.32x = 1,120,095.29 × 449,057.30
  4. Step 4: Simplify right side
    811,639.32x = 502,986,958,824.35
  5. Step 5: Solve for x
    x = 502,986,958,824.35/811,639.32
  6. Step 6: Final answer
    x = 619,717.34

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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.