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Finding the Fourth Proportional to 998,940,853.72, 1,498,927,941.11 and 724,851,820.09

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Solution

The fourth proportional to 998,940,853.72, 1,498,927,941.11 and 724,851,820.09 is: 1,087,652,629.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,940,853.72 : 1,498,927,941.11 = 724,851,820.09 : x
  2. Step 2: Convert to fraction form
    998,940,853.72/1,498,927,941.11 = 724,851,820.09/x
  3. Step 3: Cross multiply
    998,940,853.72x = 1,498,927,941.11 × 724,851,820.09
  4. Step 4: Simplify right side
    998,940,853.72x = 1,086,500,646,293,715,584
  5. Step 5: Solve for x
    x = 1,086,500,646,293,715,584/998,940,853.72
  6. Step 6: Final answer
    x = 1,087,652,629.53

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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.