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Finding the Fourth Proportional to 532,379.78, 734,680.25 and 290,662.35

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Solution

The fourth proportional to 532,379.78, 734,680.25 and 290,662.35 is: 401,111.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,379.78 : 734,680.25 = 290,662.35 : x
  2. Step 2: Convert to fraction form
    532,379.78/734,680.25 = 290,662.35/x
  3. Step 3: Cross multiply
    532,379.78x = 734,680.25 × 290,662.35
  4. Step 4: Simplify right side
    532,379.78x = 213,543,888,690.24
  5. Step 5: Solve for x
    x = 213,543,888,690.24/532,379.78
  6. Step 6: Final answer
    x = 401,111.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.