Home / 1,980,218,131,105.60-2,970,323,489,371-620,478,937,778.65

Finding the Fourth Proportional to 1,980,218,131,105.60, 2,970,323,489,371 and 620,478,937,778.65

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Solution

The fourth proportional to 1,980,218,131,105.60, 2,970,323,489,371 and 620,478,937,778.65 is: 930,717,245,031.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980,218,131,105.60 : 2,970,323,489,371 = 620,478,937,778.65 : x
  2. Step 2: Convert to fraction form
    1,980,218,131,105.60/2,970,323,489,371 = 620,478,937,778.65/x
  3. Step 3: Cross multiply
    1,980,218,131,105.60x = 2,970,323,489,371 × 620,478,937,778.65
  4. Step 4: Simplify right side
    1,980,218,131,105.60x = 1,843,023,163,543,891,333,873,664
  5. Step 5: Solve for x
    x = 1,843,023,163,543,891,333,873,664/1,980,218,131,105.60
  6. Step 6: Final answer
    x = 930,717,245,031.43

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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.