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Finding the Fourth Proportional to 520,362.40, 780,165.24 and 351,464.08

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Solution

The fourth proportional to 520,362.40, 780,165.24 and 351,464.08 is: 526,940.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,362.40 : 780,165.24 = 351,464.08 : x
  2. Step 2: Convert to fraction form
    520,362.40/780,165.24 = 351,464.08/x
  3. Step 3: Cross multiply
    520,362.40x = 780,165.24 × 351,464.08
  4. Step 4: Simplify right side
    520,362.40x = 274,200,058,324.58
  5. Step 5: Solve for x
    x = 274,200,058,324.58/520,362.40
  6. Step 6: Final answer
    x = 526,940.57

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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.