Home / 1,386,960.90-2,080,669.05-427,416.68

Finding the Fourth Proportional to 1,386,960.90, 2,080,669.05 and 427,416.68

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Solution

The fourth proportional to 1,386,960.90, 2,080,669.05 and 427,416.68 is: 641,195.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,960.90 : 2,080,669.05 = 427,416.68 : x
  2. Step 2: Convert to fraction form
    1,386,960.90/2,080,669.05 = 427,416.68/x
  3. Step 3: Cross multiply
    1,386,960.90x = 2,080,669.05 × 427,416.68
  4. Step 4: Simplify right side
    1,386,960.90x = 889,312,647,126.41
  5. Step 5: Solve for x
    x = 889,312,647,126.41/1,386,960.90
  6. Step 6: Final answer
    x = 641,195.18

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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.