Home / 838,808.20-1,258,212.30-418,904.20

Finding the Fourth Proportional to 838,808.20, 1,258,212.30 and 418,904.20

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Solution

The fourth proportional to 838,808.20, 1,258,212.30 and 418,904.20 is: 628,356.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,808.20 : 1,258,212.30 = 418,904.20 : x
  2. Step 2: Convert to fraction form
    838,808.20/1,258,212.30 = 418,904.20/x
  3. Step 3: Cross multiply
    838,808.20x = 1,258,212.30 × 418,904.20
  4. Step 4: Simplify right side
    838,808.20x = 527,070,416,961.66
  5. Step 5: Solve for x
    x = 527,070,416,961.66/838,808.20
  6. Step 6: Final answer
    x = 628,356.30

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Double scale
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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.