Home / 1,278,135,030.40-1,917,202,545.60-818,970,006.40

Finding the Fourth Proportional to 1,278,135,030.40, 1,917,202,545.60 and 818,970,006.40

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Solution

The fourth proportional to 1,278,135,030.40, 1,917,202,545.60 and 818,970,006.40 is: 1,228,455,009.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,135,030.40 : 1,917,202,545.60 = 818,970,006.40 : x
  2. Step 2: Convert to fraction form
    1,278,135,030.40/1,917,202,545.60 = 818,970,006.40/x
  3. Step 3: Cross multiply
    1,278,135,030.40x = 1,917,202,545.60 × 818,970,006.40
  4. Step 4: Simplify right side
    1,278,135,030.40x = 1,570,131,381,040,128,256
  5. Step 5: Solve for x
    x = 1,570,131,381,040,128,256/1,278,135,030.40
  6. Step 6: Final answer
    x = 1,228,455,009.60

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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.