Home / 3,118,490.30-4,678,391.55-988,789.70

Finding the Fourth Proportional to 3,118,490.30, 4,678,391.55 and 988,789.70

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Solution

The fourth proportional to 3,118,490.30, 4,678,391.55 and 988,789.70 is: 1,483,392.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118,490.30 : 4,678,391.55 = 988,789.70 : x
  2. Step 2: Convert to fraction form
    3,118,490.30/4,678,391.55 = 988,789.70/x
  3. Step 3: Cross multiply
    3,118,490.30x = 4,678,391.55 × 988,789.70
  4. Step 4: Simplify right side
    3,118,490.30x = 4,625,945,377,207.03
  5. Step 5: Solve for x
    x = 4,625,945,377,207.03/3,118,490.30
  6. Step 6: Final answer
    x = 1,483,392.58

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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.