Home / 811,007.35-1,119,142.05-448,402.75

Finding the Fourth Proportional to 811,007.35, 1,119,142.05 and 448,402.75

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Solution

The fourth proportional to 811,007.35, 1,119,142.05 and 448,402.75 is: 618,769.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,007.35 : 1,119,142.05 = 448,402.75 : x
  2. Step 2: Convert to fraction form
    811,007.35/1,119,142.05 = 448,402.75/x
  3. Step 3: Cross multiply
    811,007.35x = 1,119,142.05 × 448,402.75
  4. Step 4: Simplify right side
    811,007.35x = 501,826,372,860.64
  5. Step 5: Solve for x
    x = 501,826,372,860.64/811,007.35
  6. Step 6: Final answer
    x = 618,769.20

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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.