Home / 766,876,801.20-1,150,315,201.80-521,988,788.40

Finding the Fourth Proportional to 766,876,801.20, 1,150,315,201.80 and 521,988,788.40

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Solution

The fourth proportional to 766,876,801.20, 1,150,315,201.80 and 521,988,788.40 is: 782,983,182.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,876,801.20 : 1,150,315,201.80 = 521,988,788.40 : x
  2. Step 2: Convert to fraction form
    766,876,801.20/1,150,315,201.80 = 521,988,788.40/x
  3. Step 3: Cross multiply
    766,876,801.20x = 1,150,315,201.80 × 521,988,788.40
  4. Step 4: Simplify right side
    766,876,801.20x = 600,451,638,465,683,456
  5. Step 5: Solve for x
    x = 600,451,638,465,683,456/766,876,801.20
  6. Step 6: Final answer
    x = 782,983,182.60

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1.5x scale

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.