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Finding the Fourth Proportional to 520,369.80, 717,847.26 and 348,294.96

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Solution

The fourth proportional to 520,369.80, 717,847.26 and 348,294.96 is: 480,470.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,369.80 : 717,847.26 = 348,294.96 : x
  2. Step 2: Convert to fraction form
    520,369.80/717,847.26 = 348,294.96/x
  3. Step 3: Cross multiply
    520,369.80x = 717,847.26 × 348,294.96
  4. Step 4: Simplify right side
    520,369.80x = 250,022,582,707.81
  5. Step 5: Solve for x
    x = 250,022,582,707.81/520,369.80
  6. Step 6: Final answer
    x = 480,470.97

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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.