Home / 807,856,543.70-1,211,336,917.95-347,716,409.30

Finding the Fourth Proportional to 807,856,543.70, 1,211,336,917.95 and 347,716,409.30

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Solution

The fourth proportional to 807,856,543.70, 1,211,336,917.95 and 347,716,409.30 is: 521,381,830.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,856,543.70 : 1,211,336,917.95 = 347,716,409.30 : x
  2. Step 2: Convert to fraction form
    807,856,543.70/1,211,336,917.95 = 347,716,409.30/x
  3. Step 3: Cross multiply
    807,856,543.70x = 1,211,336,917.95 × 347,716,409.30
  4. Step 4: Simplify right side
    807,856,543.70x = 421,201,723,562,102,720
  5. Step 5: Solve for x
    x = 421,201,723,562,102,720/807,856,543.70
  6. Step 6: Final answer
    x = 521,381,830.53

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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.