Home / 838,910.88-1,257,886.56-389,400.48

Finding the Fourth Proportional to 838,910.88, 1,257,886.56 and 389,400.48

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Solution

The fourth proportional to 838,910.88, 1,257,886.56 and 389,400.48 is: 583,878.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,910.88 : 1,257,886.56 = 389,400.48 : x
  2. Step 2: Convert to fraction form
    838,910.88/1,257,886.56 = 389,400.48/x
  3. Step 3: Cross multiply
    838,910.88x = 1,257,886.56 × 389,400.48
  4. Step 4: Simplify right side
    838,910.88x = 489,821,630,249.55
  5. Step 5: Solve for x
    x = 489,821,630,249.55/838,910.88
  6. Step 6: Final answer
    x = 583,878.03

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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.