Home / 1,210,175.22-1,670,558.64-861,540.69

Finding the Fourth Proportional to 1,210,175.22, 1,670,558.64 and 861,540.69

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Solution

The fourth proportional to 1,210,175.22, 1,670,558.64 and 861,540.69 is: 1,189,294.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,175.22 : 1,670,558.64 = 861,540.69 : x
  2. Step 2: Convert to fraction form
    1,210,175.22/1,670,558.64 = 861,540.69/x
  3. Step 3: Cross multiply
    1,210,175.22x = 1,670,558.64 × 861,540.69
  4. Step 4: Simplify right side
    1,210,175.22x = 1,439,254,243,391.06
  5. Step 5: Solve for x
    x = 1,439,254,243,391.06/1,210,175.22
  6. Step 6: Final answer
    x = 1,189,294.10

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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.