Home / 817,315,912.15-1,128,538,610.36-658,040,089.75

Finding the Fourth Proportional to 817,315,912.15, 1,128,538,610.36 and 658,040,089.75

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Solution

The fourth proportional to 817,315,912.15, 1,128,538,610.36 and 658,040,089.75 is: 908,612,737.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,315,912.15 : 1,128,538,610.36 = 658,040,089.75 : x
  2. Step 2: Convert to fraction form
    817,315,912.15/1,128,538,610.36 = 658,040,089.75/x
  3. Step 3: Cross multiply
    817,315,912.15x = 1,128,538,610.36 × 658,040,089.75
  4. Step 4: Simplify right side
    817,315,912.15x = 742,623,648,447,634,560
  5. Step 5: Solve for x
    x = 742,623,648,447,634,560/817,315,912.15
  6. Step 6: Final answer
    x = 908,612,737.63

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1.5x scale

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.