Home / 12,781,371,778.20-19,172,057,667.30-7,345,553,794.20

Finding the Fourth Proportional to 12,781,371,778.20, 19,172,057,667.30 and 7,345,553,794.20

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Solution

The fourth proportional to 12,781,371,778.20, 19,172,057,667.30 and 7,345,553,794.20 is: 11,018,330,691.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,781,371,778.20 : 19,172,057,667.30 = 7,345,553,794.20 : x
  2. Step 2: Convert to fraction form
    12,781,371,778.20/19,172,057,667.30 = 7,345,553,794.20/x
  3. Step 3: Cross multiply
    12,781,371,778.20x = 19,172,057,667.30 × 7,345,553,794.20
  4. Step 4: Simplify right side
    12,781,371,778.20x = 140,829,380,940,656,705,536
  5. Step 5: Solve for x
    x = 140,829,380,940,656,705,536/12,781,371,778.20
  6. Step 6: Final answer
    x = 11,018,330,691.30

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1.5x scale

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.