Home / 456,128,472.38-629,976,923.10-309,195,664.70

Finding the Fourth Proportional to 456,128,472.38, 629,976,923.10 and 309,195,664.70

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Solution

The fourth proportional to 456,128,472.38, 629,976,923.10 and 309,195,664.70 is: 427,042,259.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,128,472.38 : 629,976,923.10 = 309,195,664.70 : x
  2. Step 2: Convert to fraction form
    456,128,472.38/629,976,923.10 = 309,195,664.70/x
  3. Step 3: Cross multiply
    456,128,472.38x = 629,976,923.10 × 309,195,664.70
  4. Step 4: Simplify right side
    456,128,472.38x = 194,786,133,480,415,392
  5. Step 5: Solve for x
    x = 194,786,133,480,415,392/456,128,472.38
  6. Step 6: Final answer
    x = 427,042,259.53

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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.