Home / 861,851,759.28-1,292,959,427.28-279,540,779.76

Finding the Fourth Proportional to 861,851,759.28, 1,292,959,427.28 and 279,540,779.76

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Solution

The fourth proportional to 861,851,759.28, 1,292,959,427.28 and 279,540,779.76 is: 419,370,132.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,851,759.28 : 1,292,959,427.28 = 279,540,779.76 : x
  2. Step 2: Convert to fraction form
    861,851,759.28/1,292,959,427.28 = 279,540,779.76/x
  3. Step 3: Cross multiply
    861,851,759.28x = 1,292,959,427.28 × 279,540,779.76
  4. Step 4: Simplify right side
    861,851,759.28x = 361,434,886,499,894,208
  5. Step 5: Solve for x
    x = 361,434,886,499,894,208/861,851,759.28
  6. Step 6: Final answer
    x = 419,370,132.52

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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.