Home / 1,242,708.42-1,715,426.22-783,731.64

Finding the Fourth Proportional to 1,242,708.42, 1,715,426.22 and 783,731.64

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Solution

The fourth proportional to 1,242,708.42, 1,715,426.22 and 783,731.64 is: 1,081,857.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,708.42 : 1,715,426.22 = 783,731.64 : x
  2. Step 2: Convert to fraction form
    1,242,708.42/1,715,426.22 = 783,731.64/x
  3. Step 3: Cross multiply
    1,242,708.42x = 1,715,426.22 × 783,731.64
  4. Step 4: Simplify right side
    1,242,708.42x = 1,344,433,804,699.60
  5. Step 5: Solve for x
    x = 1,344,433,804,699.60/1,242,708.42
  6. Step 6: Final answer
    x = 1,081,857.81

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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.