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Finding the Fourth Proportional to 520,336.92, 779,945.44 and 340,354.56

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Solution

The fourth proportional to 520,336.92, 779,945.44 and 340,354.56 is: 510,165.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,336.92 : 779,945.44 = 340,354.56 : x
  2. Step 2: Convert to fraction form
    520,336.92/779,945.44 = 340,354.56/x
  3. Step 3: Cross multiply
    520,336.92x = 779,945.44 × 340,354.56
  4. Step 4: Simplify right side
    520,336.92x = 265,457,987,055.21
  5. Step 5: Solve for x
    x = 265,457,987,055.21/520,336.92
  6. Step 6: Final answer
    x = 510,165.58

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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.