Home / 920,774.74-1,270,865.22-618,793.78

Finding the Fourth Proportional to 920,774.74, 1,270,865.22 and 618,793.78

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Solution

The fourth proportional to 920,774.74, 1,270,865.22 and 618,793.78 is: 854,067.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,774.74 : 1,270,865.22 = 618,793.78 : x
  2. Step 2: Convert to fraction form
    920,774.74/1,270,865.22 = 618,793.78/x
  3. Step 3: Cross multiply
    920,774.74x = 1,270,865.22 × 618,793.78
  4. Step 4: Simplify right side
    920,774.74x = 786,403,493,354.33
  5. Step 5: Solve for x
    x = 786,403,493,354.33/920,774.74
  6. Step 6: Final answer
    x = 854,067.19

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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.