Home / 645,130,669,213.25-890,280,410,657.98-356,098,983,145.97

Finding the Fourth Proportional to 645,130,669,213.25, 890,280,410,657.98 and 356,098,983,145.97

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Solution

The fourth proportional to 645,130,669,213.25, 890,280,410,657.98 and 356,098,983,145.97 is: 491,416,644,842.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,130,669,213.25 : 890,280,410,657.98 = 356,098,983,145.97 : x
  2. Step 2: Convert to fraction form
    645,130,669,213.25/890,280,410,657.98 = 356,098,983,145.97/x
  3. Step 3: Cross multiply
    645,130,669,213.25x = 890,280,410,657.98 × 356,098,983,145.97
  4. Step 4: Simplify right side
    645,130,669,213.25x = 317,027,948,950,083,227,090,944
  5. Step 5: Solve for x
    x = 317,027,948,950,083,227,090,944/645,130,669,213.25
  6. Step 6: Final answer
    x = 491,416,644,842.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.