Home / 811,079.28-1,119,231.59-448,436.34

Finding the Fourth Proportional to 811,079.28, 1,119,231.59 and 448,436.34

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Solution

The fourth proportional to 811,079.28, 1,119,231.59 and 448,436.34 is: 618,810.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,079.28 : 1,119,231.59 = 448,436.34 : x
  2. Step 2: Convert to fraction form
    811,079.28/1,119,231.59 = 448,436.34/x
  3. Step 3: Cross multiply
    811,079.28x = 1,119,231.59 × 448,436.34
  4. Step 4: Simplify right side
    811,079.28x = 501,904,115,589.80
  5. Step 5: Solve for x
    x = 501,904,115,589.80/811,079.28
  6. Step 6: Final answer
    x = 618,810.18

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Double scale
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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.