Home / 811,008.35-1,119,143.43-448,403.75

Finding the Fourth Proportional to 811,008.35, 1,119,143.43 and 448,403.75

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Solution

The fourth proportional to 811,008.35, 1,119,143.43 and 448,403.75 is: 618,770.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,008.35 : 1,119,143.43 = 448,403.75 : x
  2. Step 2: Convert to fraction form
    811,008.35/1,119,143.43 = 448,403.75/x
  3. Step 3: Cross multiply
    811,008.35x = 1,119,143.43 × 448,403.75
  4. Step 4: Simplify right side
    811,008.35x = 501,828,110,799.86
  5. Step 5: Solve for x
    x = 501,828,110,799.86/811,008.35
  6. Step 6: Final answer
    x = 618,770.58

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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.