Home / 715,914,991,323.30-989,255,022,325.80-509,791,377,240.30

Finding the Fourth Proportional to 715,914,991,323.30, 989,255,022,325.80 and 509,791,377,240.30

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Solution

The fourth proportional to 715,914,991,323.30, 989,255,022,325.80 and 509,791,377,240.30 is: 704,432,350,747.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,914,991,323.30 : 989,255,022,325.80 = 509,791,377,240.30 : x
  2. Step 2: Convert to fraction form
    715,914,991,323.30/989,255,022,325.80 = 509,791,377,240.30/x
  3. Step 3: Cross multiply
    715,914,991,323.30x = 989,255,022,325.80 × 509,791,377,240.30
  4. Step 4: Simplify right side
    715,914,991,323.30x = 504,313,680,273,353,335,635,968
  5. Step 5: Solve for x
    x = 504,313,680,273,353,335,635,968/715,914,991,323.30
  6. Step 6: Final answer
    x = 704,432,350,747.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.