Home / 1,190,855,712.80-1,786,283,569.20-861,787,445.60

Finding the Fourth Proportional to 1,190,855,712.80, 1,786,283,569.20 and 861,787,445.60

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Solution

The fourth proportional to 1,190,855,712.80, 1,786,283,569.20 and 861,787,445.60 is: 1,292,681,168.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190,855,712.80 : 1,786,283,569.20 = 861,787,445.60 : x
  2. Step 2: Convert to fraction form
    1,190,855,712.80/1,786,283,569.20 = 861,787,445.60/x
  3. Step 3: Cross multiply
    1,190,855,712.80x = 1,786,283,569.20 × 861,787,445.60
  4. Step 4: Simplify right side
    1,190,855,712.80x = 1,539,396,754,218,118,912
  5. Step 5: Solve for x
    x = 1,539,396,754,218,118,912/1,190,855,712.80
  6. Step 6: Final answer
    x = 1,292,681,168.40

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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.