Home / 3,119,286.60-4,678,929.90-989,537.40

Finding the Fourth Proportional to 3,119,286.60, 4,678,929.90 and 989,537.40

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Solution

The fourth proportional to 3,119,286.60, 4,678,929.90 and 989,537.40 is: 1,484,306.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119,286.60 : 4,678,929.90 = 989,537.40 : x
  2. Step 2: Convert to fraction form
    3,119,286.60/4,678,929.90 = 989,537.40/x
  3. Step 3: Cross multiply
    3,119,286.60x = 4,678,929.90 × 989,537.40
  4. Step 4: Simplify right side
    3,119,286.60x = 4,629,976,128,028.26
  5. Step 5: Solve for x
    x = 4,629,976,128,028.26/3,119,286.60
  6. Step 6: Final answer
    x = 1,484,306.10

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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.