Home / 920,702,121.94-1,380,122,607.12-396,413,209.72

Finding the Fourth Proportional to 920,702,121.94, 1,380,122,607.12 and 396,413,209.72

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Solution

The fourth proportional to 920,702,121.94, 1,380,122,607.12 and 396,413,209.72 is: 594,219,150.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,702,121.94 : 1,380,122,607.12 = 396,413,209.72 : x
  2. Step 2: Convert to fraction form
    920,702,121.94/1,380,122,607.12 = 396,413,209.72/x
  3. Step 3: Cross multiply
    920,702,121.94x = 1,380,122,607.12 × 396,413,209.72
  4. Step 4: Simplify right side
    920,702,121.94x = 547,098,832,495,573,696
  5. Step 5: Solve for x
    x = 547,098,832,495,573,696/920,702,121.94
  6. Step 6: Final answer
    x = 594,219,150.21

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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.