Home / 1,276,128,025.60-1,914,164,044.80-355,978,393.60

Finding the Fourth Proportional to 1,276,128,025.60, 1,914,164,044.80 and 355,978,393.60

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Solution

The fourth proportional to 1,276,128,025.60, 1,914,164,044.80 and 355,978,393.60 is: 533,959,781.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,128,025.60 : 1,914,164,044.80 = 355,978,393.60 : x
  2. Step 2: Convert to fraction form
    1,276,128,025.60/1,914,164,044.80 = 355,978,393.60/x
  3. Step 3: Cross multiply
    1,276,128,025.60x = 1,914,164,044.80 × 355,978,393.60
  4. Step 4: Simplify right side
    1,276,128,025.60x = 681,401,041,754,782,464
  5. Step 5: Solve for x
    x = 681,401,041,754,782,464/1,276,128,025.60
  6. Step 6: Final answer
    x = 533,959,781.53

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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.