Home / 811,019.03-1,119,161.12-448,421.13

Finding the Fourth Proportional to 811,019.03, 1,119,161.12 and 448,421.13

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Solution

The fourth proportional to 811,019.03, 1,119,161.12 and 448,421.13 is: 618,796.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,019.03 : 1,119,161.12 = 448,421.13 : x
  2. Step 2: Convert to fraction form
    811,019.03/1,119,161.12 = 448,421.13/x
  3. Step 3: Cross multiply
    811,019.03x = 1,119,161.12 × 448,421.13
  4. Step 4: Simplify right side
    811,019.03x = 501,855,491,840.36
  5. Step 5: Solve for x
    x = 501,855,491,840.36/811,019.03
  6. Step 6: Final answer
    x = 618,796.20

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Double scale
Find fourth proportional to 811,020.03, 1,119,162.49 and 448,422.13
Similar ratio
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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.