Home / 499,901,123.16-689,855,845.32-279,892,422.36

Finding the Fourth Proportional to 499,901,123.16, 689,855,845.32 and 279,892,422.36

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Solution

The fourth proportional to 499,901,123.16, 689,855,845.32 and 279,892,422.36 is: 386,247,229.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,901,123.16 : 689,855,845.32 = 279,892,422.36 : x
  2. Step 2: Convert to fraction form
    499,901,123.16/689,855,845.32 = 279,892,422.36/x
  3. Step 3: Cross multiply
    499,901,123.16x = 689,855,845.32 × 279,892,422.36
  4. Step 4: Simplify right side
    499,901,123.16x = 193,085,423,625,820,288
  5. Step 5: Solve for x
    x = 193,085,423,625,820,288/499,901,123.16
  6. Step 6: Final answer
    x = 386,247,229.06

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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.