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Finding the Fourth Proportional to 347,764.60, 487,920.20 and 347,764.60

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Solution

The fourth proportional to 347,764.60, 487,920.20 and 347,764.60 is: 487,920.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,764.60 : 487,920.20 = 347,764.60 : x
  2. Step 2: Convert to fraction form
    347,764.60/487,920.20 = 347,764.60/x
  3. Step 3: Cross multiply
    347,764.60x = 487,920.20 × 347,764.60
  4. Step 4: Simplify right side
    347,764.60x = 169,681,373,184.92
  5. Step 5: Solve for x
    x = 169,681,373,184.92/347,764.60
  6. Step 6: Final answer
    x = 487,920.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.