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Finding the Fourth Proportional to 978,100.60, 1,467,150.90 and 971,879.80

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Solution

The fourth proportional to 978,100.60, 1,467,150.90 and 971,879.80 is: 1,457,819.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,100.60 : 1,467,150.90 = 971,879.80 : x
  2. Step 2: Convert to fraction form
    978,100.60/1,467,150.90 = 971,879.80/x
  3. Step 3: Cross multiply
    978,100.60x = 1,467,150.90 × 971,879.80
  4. Step 4: Simplify right side
    978,100.60x = 1,425,894,323,261.82
  5. Step 5: Solve for x
    x = 1,425,894,323,261.82/978,100.60
  6. Step 6: Final answer
    x = 1,457,819.70

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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.