Home / 665,617,832.92-996,483,993.51-388,419,607

Finding the Fourth Proportional to 665,617,832.92, 996,483,993.51 and 388,419,607

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Solution

The fourth proportional to 665,617,832.92, 996,483,993.51 and 388,419,607 is: 581,495,720.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,617,832.92 : 996,483,993.51 = 388,419,607 : x
  2. Step 2: Convert to fraction form
    665,617,832.92/996,483,993.51 = 388,419,607/x
  3. Step 3: Cross multiply
    665,617,832.92x = 996,483,993.51 × 388,419,607
  4. Step 4: Simplify right side
    665,617,832.92x = 387,053,921,140,944,768
  5. Step 5: Solve for x
    x = 387,053,921,140,944,768/665,617,832.92
  6. Step 6: Final answer
    x = 581,495,720.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.