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Finding the Fourth Proportional to 642,288.68, 886,361.76 and 362,887.12

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Solution

The fourth proportional to 642,288.68, 886,361.76 and 362,887.12 is: 500,786.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,288.68 : 886,361.76 = 362,887.12 : x
  2. Step 2: Convert to fraction form
    642,288.68/886,361.76 = 362,887.12/x
  3. Step 3: Cross multiply
    642,288.68x = 886,361.76 × 362,887.12
  4. Step 4: Simplify right side
    642,288.68x = 321,649,266,364.53
  5. Step 5: Solve for x
    x = 321,649,266,364.53/642,288.68
  6. Step 6: Final answer
    x = 500,786.14

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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.