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Finding the Fourth Proportional to 978,374.60, 1,467,707.70 and 347,235.56

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Solution

The fourth proportional to 978,374.60, 1,467,707.70 and 347,235.56 is: 520,905.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,374.60 : 1,467,707.70 = 347,235.56 : x
  2. Step 2: Convert to fraction form
    978,374.60/1,467,707.70 = 347,235.56/x
  3. Step 3: Cross multiply
    978,374.60x = 1,467,707.70 × 347,235.56
  4. Step 4: Simplify right side
    978,374.60x = 509,640,305,125.81
  5. Step 5: Solve for x
    x = 509,640,305,125.81/978,374.60
  6. Step 6: Final answer
    x = 520,905.09

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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.