Home / 500,768,335.20-690,261,825.76-394,748,857.36

Finding the Fourth Proportional to 500,768,335.20, 690,261,825.76 and 394,748,857.36

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Solution

The fourth proportional to 500,768,335.20, 690,261,825.76 and 394,748,857.36 is: 544,123,994.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,768,335.20 : 690,261,825.76 = 394,748,857.36 : x
  2. Step 2: Convert to fraction form
    500,768,335.20/690,261,825.76 = 394,748,857.36/x
  3. Step 3: Cross multiply
    500,768,335.20x = 690,261,825.76 × 394,748,857.36
  4. Step 4: Simplify right side
    500,768,335.20x = 272,480,066,997,987,424
  5. Step 5: Solve for x
    x = 272,480,066,997,987,424/500,768,335.20
  6. Step 6: Final answer
    x = 544,123,994.76

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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.