Home / 519,317.20-778,975.80-203,784.40

Finding the Fourth Proportional to 519,317.20, 778,975.80 and 203,784.40

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Solution

The fourth proportional to 519,317.20, 778,975.80 and 203,784.40 is: 305,676.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,317.20 : 778,975.80 = 203,784.40 : x
  2. Step 2: Convert to fraction form
    519,317.20/778,975.80 = 203,784.40/x
  3. Step 3: Cross multiply
    519,317.20x = 778,975.80 × 203,784.40
  4. Step 4: Simplify right side
    519,317.20x = 158,743,116,017.52
  5. Step 5: Solve for x
    x = 158,743,116,017.52/519,317.20
  6. Step 6: Final answer
    x = 305,676.60

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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.