Home / 818,345,455.72-1,226,679,608.12-621,191,508.64

Finding the Fourth Proportional to 818,345,455.72, 1,226,679,608.12 and 621,191,508.64

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Solution

The fourth proportional to 818,345,455.72, 1,226,679,608.12 and 621,191,508.64 is: 931,150,715.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,345,455.72 : 1,226,679,608.12 = 621,191,508.64 : x
  2. Step 2: Convert to fraction form
    818,345,455.72/1,226,679,608.12 = 621,191,508.64/x
  3. Step 3: Cross multiply
    818,345,455.72x = 1,226,679,608.12 × 621,191,508.64
  4. Step 4: Simplify right side
    818,345,455.72x = 762,002,956,379,814,144
  5. Step 5: Solve for x
    x = 762,002,956,379,814,144/818,345,455.72
  6. Step 6: Final answer
    x = 931,150,715.21

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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.