Home / 920,702,122.94-1,380,122,608.62-396,413,210.72

Finding the Fourth Proportional to 920,702,122.94, 1,380,122,608.62 and 396,413,210.72

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Solution

The fourth proportional to 920,702,122.94, 1,380,122,608.62 and 396,413,210.72 is: 594,219,151.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,702,122.94 : 1,380,122,608.62 = 396,413,210.72 : x
  2. Step 2: Convert to fraction form
    920,702,122.94/1,380,122,608.62 = 396,413,210.72/x
  3. Step 3: Cross multiply
    920,702,122.94x = 1,380,122,608.62 × 396,413,210.72
  4. Step 4: Simplify right side
    920,702,122.94x = 547,098,834,470,316,160
  5. Step 5: Solve for x
    x = 547,098,834,470,316,160/920,702,122.94
  6. Step 6: Final answer
    x = 594,219,151.71

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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.