Home / 810,856.89-1,118,885.22-448,231.59

Finding the Fourth Proportional to 810,856.89, 1,118,885.22 and 448,231.59

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Solution

The fourth proportional to 810,856.89, 1,118,885.22 and 448,231.59 is: 618,505.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,856.89 : 1,118,885.22 = 448,231.59 : x
  2. Step 2: Convert to fraction form
    810,856.89/1,118,885.22 = 448,231.59/x
  3. Step 3: Cross multiply
    810,856.89x = 1,118,885.22 × 448,231.59
  4. Step 4: Simplify right side
    810,856.89x = 501,519,701,188.10
  5. Step 5: Solve for x
    x = 501,519,701,188.10/810,856.89
  6. Step 6: Final answer
    x = 618,505.81

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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.