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Finding the Fourth Proportional to 519,631.65, 779,447.48 and 342,338.85

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Solution

The fourth proportional to 519,631.65, 779,447.48 and 342,338.85 is: 513,508.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,631.65 : 779,447.48 = 342,338.85 : x
  2. Step 2: Convert to fraction form
    519,631.65/779,447.48 = 342,338.85/x
  3. Step 3: Cross multiply
    519,631.65x = 779,447.48 × 342,338.85
  4. Step 4: Simplify right side
    519,631.65x = 266,835,152,226.90
  5. Step 5: Solve for x
    x = 266,835,152,226.90/519,631.65
  6. Step 6: Final answer
    x = 513,508.28

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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.