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Finding the Fourth Proportional to 820,263.98, 1,129,437.87 and 699,133.34

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Solution

The fourth proportional to 820,263.98, 1,129,437.87 and 699,133.34 is: 962,650.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,263.98 : 1,129,437.87 = 699,133.34 : x
  2. Step 2: Convert to fraction form
    820,263.98/1,129,437.87 = 699,133.34/x
  3. Step 3: Cross multiply
    820,263.98x = 1,129,437.87 × 699,133.34
  4. Step 4: Simplify right side
    820,263.98x = 789,627,670,375.59
  5. Step 5: Solve for x
    x = 789,627,670,375.59/820,263.98
  6. Step 6: Final answer
    x = 962,650.67

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1.5x scale

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.