Home / 456,128,086.55-629,976,389.49-309,195,278.87

Finding the Fourth Proportional to 456,128,086.55, 629,976,389.49 and 309,195,278.87

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Solution

The fourth proportional to 456,128,086.55, 629,976,389.49 and 309,195,278.87 is: 427,041,726.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,128,086.55 : 629,976,389.49 = 309,195,278.87 : x
  2. Step 2: Convert to fraction form
    456,128,086.55/629,976,389.49 = 309,195,278.87/x
  3. Step 3: Cross multiply
    456,128,086.55x = 629,976,389.49 × 309,195,278.87
  4. Step 4: Simplify right side
    456,128,086.55x = 194,785,725,426,726,400
  5. Step 5: Solve for x
    x = 194,785,725,426,726,400/456,128,086.55
  6. Step 6: Final answer
    x = 427,041,726.16

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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.