Home / 920,702,121.82-1,380,122,606.93-396,413,209.60

Finding the Fourth Proportional to 920,702,121.82, 1,380,122,606.93 and 396,413,209.60

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Solution

The fourth proportional to 920,702,121.82, 1,380,122,606.93 and 396,413,209.60 is: 594,219,150.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,702,121.82 : 1,380,122,606.93 = 396,413,209.60 : x
  2. Step 2: Convert to fraction form
    920,702,121.82/1,380,122,606.93 = 396,413,209.60/x
  3. Step 3: Cross multiply
    920,702,121.82x = 1,380,122,606.93 × 396,413,209.60
  4. Step 4: Simplify right side
    920,702,121.82x = 547,098,832,248,730,944
  5. Step 5: Solve for x
    x = 547,098,832,248,730,944/920,702,121.82
  6. Step 6: Final answer
    x = 594,219,150.02

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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.