Home / 811,021.77-1,119,164.85-448,423.83

Finding the Fourth Proportional to 811,021.77, 1,119,164.85 and 448,423.83

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Solution

The fourth proportional to 811,021.77, 1,119,164.85 and 448,423.83 is: 618,799.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,021.77 : 1,119,164.85 = 448,423.83 : x
  2. Step 2: Convert to fraction form
    811,021.77/1,119,164.85 = 448,423.83/x
  3. Step 3: Cross multiply
    811,021.77x = 1,119,164.85 × 448,423.83
  4. Step 4: Simplify right side
    811,021.77x = 501,860,188,438.38
  5. Step 5: Solve for x
    x = 501,860,188,438.38/811,021.77
  6. Step 6: Final answer
    x = 618,799.90

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Double scale
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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.