Home / 519,028.60-778,542.90-186,638.20

Finding the Fourth Proportional to 519,028.60, 778,542.90 and 186,638.20

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Solution

The fourth proportional to 519,028.60, 778,542.90 and 186,638.20 is: 279,957.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,028.60 : 778,542.90 = 186,638.20 : x
  2. Step 2: Convert to fraction form
    519,028.60/778,542.90 = 186,638.20/x
  3. Step 3: Cross multiply
    519,028.60x = 778,542.90 × 186,638.20
  4. Step 4: Simplify right side
    519,028.60x = 145,305,845,478.78
  5. Step 5: Solve for x
    x = 145,305,845,478.78/519,028.60
  6. Step 6: Final answer
    x = 279,957.30

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Double scale
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Similar ratio
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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.