Home / 782,281,173,999.80-1,173,421,760,999.70-279,770,971,734.20

Finding the Fourth Proportional to 782,281,173,999.80, 1,173,421,760,999.70 and 279,770,971,734.20

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Solution

The fourth proportional to 782,281,173,999.80, 1,173,421,760,999.70 and 279,770,971,734.20 is: 419,656,457,601.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,281,173,999.80 : 1,173,421,760,999.70 = 279,770,971,734.20 : x
  2. Step 2: Convert to fraction form
    782,281,173,999.80/1,173,421,760,999.70 = 279,770,971,734.20/x
  3. Step 3: Cross multiply
    782,281,173,999.80x = 1,173,421,760,999.70 × 279,770,971,734.20
  4. Step 4: Simplify right side
    782,281,173,999.80x = 328,289,346,328,942,264,451,072
  5. Step 5: Solve for x
    x = 328,289,346,328,942,264,451,072/782,281,173,999.80
  6. Step 6: Final answer
    x = 419,656,457,601.30

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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.