Home / 488,561,971.74-674,212,376.30-279,758,470.74

Finding the Fourth Proportional to 488,561,971.74, 674,212,376.30 and 279,758,470.74

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Solution

The fourth proportional to 488,561,971.74, 674,212,376.30 and 279,758,470.74 is: 386,064,888.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,561,971.74 : 674,212,376.30 = 279,758,470.74 : x
  2. Step 2: Convert to fraction form
    488,561,971.74/674,212,376.30 = 279,758,470.74/x
  3. Step 3: Cross multiply
    488,561,971.74x = 674,212,376.30 × 279,758,470.74
  4. Step 4: Simplify right side
    488,561,971.74x = 188,616,623,347,669,408
  5. Step 5: Solve for x
    x = 188,616,623,347,669,408/488,561,971.74
  6. Step 6: Final answer
    x = 386,064,888.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.