Home / 828,308.20-1,242,024.90-354,458.20

Finding the Fourth Proportional to 828,308.20, 1,242,024.90 and 354,458.20

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Solution

The fourth proportional to 828,308.20, 1,242,024.90 and 354,458.20 is: 531,500.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,308.20 : 1,242,024.90 = 354,458.20 : x
  2. Step 2: Convert to fraction form
    828,308.20/1,242,024.90 = 354,458.20/x
  3. Step 3: Cross multiply
    828,308.20x = 1,242,024.90 × 354,458.20
  4. Step 4: Simplify right side
    828,308.20x = 440,245,910,409.18
  5. Step 5: Solve for x
    x = 440,245,910,409.18/828,308.20
  6. Step 6: Final answer
    x = 531,500.12

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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.