Home / 811,221.48-1,119,479.04-448,660.56

Finding the Fourth Proportional to 811,221.48, 1,119,479.04 and 448,660.56

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Solution

The fourth proportional to 811,221.48, 1,119,479.04 and 448,660.56 is: 619,147.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,221.48 : 1,119,479.04 = 448,660.56 : x
  2. Step 2: Convert to fraction form
    811,221.48/1,119,479.04 = 448,660.56/x
  3. Step 3: Cross multiply
    811,221.48x = 1,119,479.04 × 448,660.56
  4. Step 4: Simplify right side
    811,221.48x = 502,266,092,994.66
  5. Step 5: Solve for x
    x = 502,266,092,994.66/811,221.48
  6. Step 6: Final answer
    x = 619,147.92

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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.