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Finding the Fourth Proportional to 519,769.80, 779,654.70 and 379,801.80

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Solution

The fourth proportional to 519,769.80, 779,654.70 and 379,801.80 is: 569,702.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,769.80 : 779,654.70 = 379,801.80 : x
  2. Step 2: Convert to fraction form
    519,769.80/779,654.70 = 379,801.80/x
  3. Step 3: Cross multiply
    519,769.80x = 779,654.70 × 379,801.80
  4. Step 4: Simplify right side
    519,769.80x = 296,114,258,438.46
  5. Step 5: Solve for x
    x = 296,114,258,438.46/519,769.80
  6. Step 6: Final answer
    x = 569,702.70

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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.