Home / 1,386,929.40-2,080,402.04-427,372.44

Finding the Fourth Proportional to 1,386,929.40, 2,080,402.04 and 427,372.44

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Solution

The fourth proportional to 1,386,929.40, 2,080,402.04 and 427,372.44 is: 641,061.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,929.40 : 2,080,402.04 = 427,372.44 : x
  2. Step 2: Convert to fraction form
    1,386,929.40/2,080,402.04 = 427,372.44/x
  3. Step 3: Cross multiply
    1,386,929.40x = 2,080,402.04 × 427,372.44
  4. Step 4: Simplify right side
    1,386,929.40x = 889,106,496,015.78
  5. Step 5: Solve for x
    x = 889,106,496,015.78/1,386,929.40
  6. Step 6: Final answer
    x = 641,061.11

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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.