Home / 638,194,771.60-880,558,820.76-387,293,480.80

Finding the Fourth Proportional to 638,194,771.60, 880,558,820.76 and 387,293,480.80

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Solution

The fourth proportional to 638,194,771.60, 880,558,820.76 and 387,293,480.80 is: 534,373,996.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,194,771.60 : 880,558,820.76 = 387,293,480.80 : x
  2. Step 2: Convert to fraction form
    638,194,771.60/880,558,820.76 = 387,293,480.80/x
  3. Step 3: Cross multiply
    638,194,771.60x = 880,558,820.76 × 387,293,480.80
  4. Step 4: Simplify right side
    638,194,771.60x = 341,034,690,741,283,712
  5. Step 5: Solve for x
    x = 341,034,690,741,283,712/638,194,771.60
  6. Step 6: Final answer
    x = 534,373,996.65

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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.