Home / 519,938.10-779,907.15-164,979.90

Finding the Fourth Proportional to 519,938.10, 779,907.15 and 164,979.90

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Solution

The fourth proportional to 519,938.10, 779,907.15 and 164,979.90 is: 247,469.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,938.10 : 779,907.15 = 164,979.90 : x
  2. Step 2: Convert to fraction form
    519,938.10/779,907.15 = 164,979.90/x
  3. Step 3: Cross multiply
    519,938.10x = 779,907.15 × 164,979.90
  4. Step 4: Simplify right side
    519,938.10x = 128,669,003,616.29
  5. Step 5: Solve for x
    x = 128,669,003,616.29/519,938.10
  6. Step 6: Final answer
    x = 247,469.85

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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.