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Finding the Fourth Proportional to 648,649.91, 972,185.22 and 459,163.98

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Solution

The fourth proportional to 648,649.91, 972,185.22 and 459,163.98 is: 688,187.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,649.91 : 972,185.22 = 459,163.98 : x
  2. Step 2: Convert to fraction form
    648,649.91/972,185.22 = 459,163.98/x
  3. Step 3: Cross multiply
    648,649.91x = 972,185.22 × 459,163.98
  4. Step 4: Simplify right side
    648,649.91x = 446,392,434,912.38
  5. Step 5: Solve for x
    x = 446,392,434,912.38/648,649.91
  6. Step 6: Final answer
    x = 688,187.00

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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.