Home / 3,130,619,442.29-4,320,727,078.48-1,909,220,163.78

Finding the Fourth Proportional to 3,130,619,442.29, 4,320,727,078.48 and 1,909,220,163.78

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Solution

The fourth proportional to 3,130,619,442.29, 4,320,727,078.48 and 1,909,220,163.78 is: 2,635,011,828.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130,619,442.29 : 4,320,727,078.48 = 1,909,220,163.78 : x
  2. Step 2: Convert to fraction form
    3,130,619,442.29/4,320,727,078.48 = 1,909,220,163.78/x
  3. Step 3: Cross multiply
    3,130,619,442.29x = 4,320,727,078.48 × 1,909,220,163.78
  4. Step 4: Simplify right side
    3,130,619,442.29x = 8,249,219,260,424,265,728
  5. Step 5: Solve for x
    x = 8,249,219,260,424,265,728/3,130,619,442.29
  6. Step 6: Final answer
    x = 2,635,011,828.33

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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.