Home / 814,346,443.60-1,221,463,678.20-261,640,805.20

Finding the Fourth Proportional to 814,346,443.60, 1,221,463,678.20 and 261,640,805.20

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Solution

The fourth proportional to 814,346,443.60, 1,221,463,678.20 and 261,640,805.20 is: 392,443,219.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,346,443.60 : 1,221,463,678.20 = 261,640,805.20 : x
  2. Step 2: Convert to fraction form
    814,346,443.60/1,221,463,678.20 = 261,640,805.20/x
  3. Step 3: Cross multiply
    814,346,443.60x = 1,221,463,678.20 × 261,640,805.20
  4. Step 4: Simplify right side
    814,346,443.60x = 319,584,740,286,801,664
  5. Step 5: Solve for x
    x = 319,584,740,286,801,664/814,346,443.60
  6. Step 6: Final answer
    x = 392,443,219.71

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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.