Home / 1,288,009,985.60-1,932,014,978.40-1,201,278,814.40

Finding the Fourth Proportional to 1,288,009,985.60, 1,932,014,978.40 and 1,201,278,814.40

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Solution

The fourth proportional to 1,288,009,985.60, 1,932,014,978.40 and 1,201,278,814.40 is: 1,801,918,221.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,009,985.60 : 1,932,014,978.40 = 1,201,278,814.40 : x
  2. Step 2: Convert to fraction form
    1,288,009,985.60/1,932,014,978.40 = 1,201,278,814.40/x
  3. Step 3: Cross multiply
    1,288,009,985.60x = 1,932,014,978.40 × 1,201,278,814.40
  4. Step 4: Simplify right side
    1,288,009,985.60x = 2,320,888,662,655,393,792
  5. Step 5: Solve for x
    x = 2,320,888,662,655,393,792/1,288,009,985.60
  6. Step 6: Final answer
    x = 1,801,918,221.60

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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.