Home / 519,021.60-778,532.40-186,631.20

Finding the Fourth Proportional to 519,021.60, 778,532.40 and 186,631.20

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Solution

The fourth proportional to 519,021.60, 778,532.40 and 186,631.20 is: 279,946.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,021.60 : 778,532.40 = 186,631.20 : x
  2. Step 2: Convert to fraction form
    519,021.60/778,532.40 = 186,631.20/x
  3. Step 3: Cross multiply
    519,021.60x = 778,532.40 × 186,631.20
  4. Step 4: Simplify right side
    519,021.60x = 145,298,436,050.88
  5. Step 5: Solve for x
    x = 145,298,436,050.88/519,021.60
  6. Step 6: Final answer
    x = 279,946.80

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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.