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Finding the Fourth Proportional to 978,152.70, 1,467,229.05 and 347,130.30

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Solution

The fourth proportional to 978,152.70, 1,467,229.05 and 347,130.30 is: 520,695.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,152.70 : 1,467,229.05 = 347,130.30 : x
  2. Step 2: Convert to fraction form
    978,152.70/1,467,229.05 = 347,130.30/x
  3. Step 3: Cross multiply
    978,152.70x = 1,467,229.05 × 347,130.30
  4. Step 4: Simplify right side
    978,152.70x = 509,319,660,295.22
  5. Step 5: Solve for x
    x = 509,319,660,295.22/978,152.70
  6. Step 6: Final answer
    x = 520,695.45

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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.