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Finding the Fourth Proportional to 604,118.40, 908,145.90 and 427,846.20

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Solution

The fourth proportional to 604,118.40, 908,145.90 and 427,846.20 is: 643,163.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,118.40 : 908,145.90 = 427,846.20 : x
  2. Step 2: Convert to fraction form
    604,118.40/908,145.90 = 427,846.20/x
  3. Step 3: Cross multiply
    604,118.40x = 908,145.90 × 427,846.20
  4. Step 4: Simplify right side
    604,118.40x = 388,546,772,360.58
  5. Step 5: Solve for x
    x = 388,546,772,360.58/604,118.40
  6. Step 6: Final answer
    x = 643,163.28

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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.