Home / 820,183,113.87-1,131,730,939.83-498,143,497.52

Finding the Fourth Proportional to 820,183,113.87, 1,131,730,939.83 and 498,143,497.52

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Solution

The fourth proportional to 820,183,113.87, 1,131,730,939.83 and 498,143,497.52 is: 687,364,076.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,183,113.87 : 1,131,730,939.83 = 498,143,497.52 : x
  2. Step 2: Convert to fraction form
    820,183,113.87/1,131,730,939.83 = 498,143,497.52/x
  3. Step 3: Cross multiply
    820,183,113.87x = 1,131,730,939.83 × 498,143,497.52
  4. Step 4: Simplify right side
    820,183,113.87x = 563,764,408,620,395,712
  5. Step 5: Solve for x
    x = 563,764,408,620,395,712/820,183,113.87
  6. Step 6: Final answer
    x = 687,364,076.49

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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.