Home / 807,421,996.20-1,211,699,864.70-347,690,101.80

Finding the Fourth Proportional to 807,421,996.20, 1,211,699,864.70 and 347,690,101.80

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Solution

The fourth proportional to 807,421,996.20, 1,211,699,864.70 and 347,690,101.80 is: 521,779,257.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,421,996.20 : 1,211,699,864.70 = 347,690,101.80 : x
  2. Step 2: Convert to fraction form
    807,421,996.20/1,211,699,864.70 = 347,690,101.80/x
  3. Step 3: Cross multiply
    807,421,996.20x = 1,211,699,864.70 × 347,690,101.80
  4. Step 4: Simplify right side
    807,421,996.20x = 421,296,049,308,589,248
  5. Step 5: Solve for x
    x = 421,296,049,308,589,248/807,421,996.20
  6. Step 6: Final answer
    x = 521,779,257.06

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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.