Home / 920,702,123.07-1,380,122,608.80-396,413,210.85

Finding the Fourth Proportional to 920,702,123.07, 1,380,122,608.80 and 396,413,210.85

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Solution

The fourth proportional to 920,702,123.07, 1,380,122,608.80 and 396,413,210.85 is: 594,219,151.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,702,123.07 : 1,380,122,608.80 = 396,413,210.85 : x
  2. Step 2: Convert to fraction form
    920,702,123.07/1,380,122,608.80 = 396,413,210.85/x
  3. Step 3: Cross multiply
    920,702,123.07x = 1,380,122,608.80 × 396,413,210.85
  4. Step 4: Simplify right side
    920,702,123.07x = 547,098,834,721,086,464
  5. Step 5: Solve for x
    x = 547,098,834,721,086,464/920,702,123.07
  6. Step 6: Final answer
    x = 594,219,151.90

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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.