Home / 628,819.03-867,743.04-342,340.12

Finding the Fourth Proportional to 628,819.03, 867,743.04 and 342,340.12

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Solution

The fourth proportional to 628,819.03, 867,743.04 and 342,340.12 is: 472,414.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,819.03 : 867,743.04 = 342,340.12 : x
  2. Step 2: Convert to fraction form
    628,819.03/867,743.04 = 342,340.12/x
  3. Step 3: Cross multiply
    628,819.03x = 867,743.04 × 342,340.12
  4. Step 4: Simplify right side
    628,819.03x = 297,063,256,442.77
  5. Step 5: Solve for x
    x = 297,063,256,442.77/628,819.03
  6. Step 6: Final answer
    x = 472,414.55

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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.