Home / 498,102,473.70-687,444,819.21-289,217,029.86

Finding the Fourth Proportional to 498,102,473.70, 687,444,819.21 and 289,217,029.86

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Solution

The fourth proportional to 498,102,473.70, 687,444,819.21 and 289,217,029.86 is: 399,156,316.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,102,473.70 : 687,444,819.21 = 289,217,029.86 : x
  2. Step 2: Convert to fraction form
    498,102,473.70/687,444,819.21 = 289,217,029.86/x
  3. Step 3: Cross multiply
    498,102,473.70x = 687,444,819.21 × 289,217,029.86
  4. Step 4: Simplify right side
    498,102,473.70x = 198,820,748,804,560,896
  5. Step 5: Solve for x
    x = 198,820,748,804,560,896/498,102,473.70
  6. Step 6: Final answer
    x = 399,156,316.83

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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.