Home / 1,386,930.40-2,080,403.54-427,373.44

Finding the Fourth Proportional to 1,386,930.40, 2,080,403.54 and 427,373.44

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Solution

The fourth proportional to 1,386,930.40, 2,080,403.54 and 427,373.44 is: 641,062.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,930.40 : 2,080,403.54 = 427,373.44 : x
  2. Step 2: Convert to fraction form
    1,386,930.40/2,080,403.54 = 427,373.44/x
  3. Step 3: Cross multiply
    1,386,930.40x = 2,080,403.54 × 427,373.44
  4. Step 4: Simplify right side
    1,386,930.40x = 889,109,217,477.98
  5. Step 5: Solve for x
    x = 889,109,217,477.98/1,386,930.40
  6. Step 6: Final answer
    x = 641,062.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.