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Finding the Fourth Proportional to 655,247.40, 904,520.40 and 440,512

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Solution

The fourth proportional to 655,247.40, 904,520.40 and 440,512 is: 608,094.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,247.40 : 904,520.40 = 440,512 : x
  2. Step 2: Convert to fraction form
    655,247.40/904,520.40 = 440,512/x
  3. Step 3: Cross multiply
    655,247.40x = 904,520.40 × 440,512
  4. Step 4: Simplify right side
    655,247.40x = 398,452,090,444.80
  5. Step 5: Solve for x
    x = 398,452,090,444.80/655,247.40
  6. Step 6: Final answer
    x = 608,094.12

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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.