Home / 499,602,906.45-689,524,163.19-287,869,200.57

Finding the Fourth Proportional to 499,602,906.45, 689,524,163.19 and 287,869,200.57

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Solution

The fourth proportional to 499,602,906.45, 689,524,163.19 and 287,869,200.57 is: 397,301,070.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,602,906.45 : 689,524,163.19 = 287,869,200.57 : x
  2. Step 2: Convert to fraction form
    499,602,906.45/689,524,163.19 = 287,869,200.57/x
  3. Step 3: Cross multiply
    499,602,906.45x = 689,524,163.19 × 287,869,200.57
  4. Step 4: Simplify right side
    499,602,906.45x = 198,492,769,631,203,520
  5. Step 5: Solve for x
    x = 198,492,769,631,203,520/499,602,906.45
  6. Step 6: Final answer
    x = 397,301,070.65

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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.