Home / 811,019.54-1,119,109.29-448,394.42

Finding the Fourth Proportional to 811,019.54, 1,119,109.29 and 448,394.42

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Solution

The fourth proportional to 811,019.54, 1,119,109.29 and 448,394.42 is: 618,730.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,019.54 : 1,119,109.29 = 448,394.42 : x
  2. Step 2: Convert to fraction form
    811,019.54/1,119,109.29 = 448,394.42/x
  3. Step 3: Cross multiply
    811,019.54x = 1,119,109.29 × 448,394.42
  4. Step 4: Simplify right side
    811,019.54x = 501,802,361,006.16
  5. Step 5: Solve for x
    x = 501,802,361,006.16/811,019.54
  6. Step 6: Final answer
    x = 618,730.30

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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.