Home / 628,819.86-867,766.20-342,339.36

Finding the Fourth Proportional to 628,819.86, 867,766.20 and 342,339.36

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Solution

The fourth proportional to 628,819.86, 867,766.20 and 342,339.36 is: 472,425.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,819.86 : 867,766.20 = 342,339.36 : x
  2. Step 2: Convert to fraction form
    628,819.86/867,766.20 = 342,339.36/x
  3. Step 3: Cross multiply
    628,819.86x = 867,766.20 × 342,339.36
  4. Step 4: Simplify right side
    628,819.86x = 297,070,525,537.63
  5. Step 5: Solve for x
    x = 297,070,525,537.63/628,819.86
  6. Step 6: Final answer
    x = 472,425.48

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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.