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Finding the Fourth Proportional to 978,092.60, 1,467,138.90 and 971,871.80

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Solution

The fourth proportional to 978,092.60, 1,467,138.90 and 971,871.80 is: 1,457,807.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,092.60 : 1,467,138.90 = 971,871.80 : x
  2. Step 2: Convert to fraction form
    978,092.60/1,467,138.90 = 971,871.80/x
  3. Step 3: Cross multiply
    978,092.60x = 1,467,138.90 × 971,871.80
  4. Step 4: Simplify right side
    978,092.60x = 1,425,870,923,593.02
  5. Step 5: Solve for x
    x = 1,425,870,923,593.02/978,092.60
  6. Step 6: Final answer
    x = 1,457,807.70

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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.