Home / 1,920,677,971.13-2,649,723,979.31-1,285,803,010.15

Finding the Fourth Proportional to 1,920,677,971.13, 2,649,723,979.31 and 1,285,803,010.15

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Solution

The fourth proportional to 1,920,677,971.13, 2,649,723,979.31 and 1,285,803,010.15 is: 1,773,864,812.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920,677,971.13 : 2,649,723,979.31 = 1,285,803,010.15 : x
  2. Step 2: Convert to fraction form
    1,920,677,971.13/2,649,723,979.31 = 1,285,803,010.15/x
  3. Step 3: Cross multiply
    1,920,677,971.13x = 2,649,723,979.31 × 1,285,803,010.15
  4. Step 4: Simplify right side
    1,920,677,971.13x = 3,407,023,068,650,380,800
  5. Step 5: Solve for x
    x = 3,407,023,068,650,380,800/1,920,677,971.13
  6. Step 6: Final answer
    x = 1,773,864,812.25

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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.