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Finding the Fourth Proportional to 978,150,680.70, 1,467,226,021.05 and 651,633,330.30

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Solution

The fourth proportional to 978,150,680.70, 1,467,226,021.05 and 651,633,330.30 is: 977,449,995.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,150,680.70 : 1,467,226,021.05 = 651,633,330.30 : x
  2. Step 2: Convert to fraction form
    978,150,680.70/1,467,226,021.05 = 651,633,330.30/x
  3. Step 3: Cross multiply
    978,150,680.70x = 1,467,226,021.05 × 651,633,330.30
  4. Step 4: Simplify right side
    978,150,680.70x = 956,093,378,399,629,312
  5. Step 5: Solve for x
    x = 956,093,378,399,629,312/978,150,680.70
  6. Step 6: Final answer
    x = 977,449,995.45

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1.5x scale

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.