Home / 810,756.72-1,118,836.89-448,189.77

Finding the Fourth Proportional to 810,756.72, 1,118,836.89 and 448,189.77

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Solution

The fourth proportional to 810,756.72, 1,118,836.89 and 448,189.77 is: 618,497.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,756.72 : 1,118,836.89 = 448,189.77 : x
  2. Step 2: Convert to fraction form
    810,756.72/1,118,836.89 = 448,189.77/x
  3. Step 3: Cross multiply
    810,756.72x = 1,118,836.89 × 448,189.77
  4. Step 4: Simplify right side
    810,756.72x = 501,451,248,396.62
  5. Step 5: Solve for x
    x = 501,451,248,396.62/810,756.72
  6. Step 6: Final answer
    x = 618,497.80

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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.