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Finding the Fourth Proportional to 613,636.37, 919,814.68 and 343,368.28

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Solution

The fourth proportional to 613,636.37, 919,814.68 and 343,368.28 is: 514,694.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,636.37 : 919,814.68 = 343,368.28 : x
  2. Step 2: Convert to fraction form
    613,636.37/919,814.68 = 343,368.28/x
  3. Step 3: Cross multiply
    613,636.37x = 919,814.68 × 343,368.28
  4. Step 4: Simplify right side
    613,636.37x = 315,835,184,590.35
  5. Step 5: Solve for x
    x = 315,835,184,590.35/613,636.37
  6. Step 6: Final answer
    x = 514,694.37

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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.