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Finding the Fourth Proportional to 978,151,251.20, 1,467,226,876.80 and 651,633,900.80

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Solution

The fourth proportional to 978,151,251.20, 1,467,226,876.80 and 651,633,900.80 is: 977,450,851.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,151,251.20 : 1,467,226,876.80 = 651,633,900.80 : x
  2. Step 2: Convert to fraction form
    978,151,251.20/1,467,226,876.80 = 651,633,900.80/x
  3. Step 3: Cross multiply
    978,151,251.20x = 1,467,226,876.80 × 651,633,900.80
  4. Step 4: Simplify right side
    978,151,251.20x = 956,094,773,087,784,960
  5. Step 5: Solve for x
    x = 956,094,773,087,784,960/978,151,251.20
  6. Step 6: Final answer
    x = 977,450,851.20

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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.