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Finding the Fourth Proportional to 472,418.80, 706,900.20 and 348,002.80

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Solution

The fourth proportional to 472,418.80, 706,900.20 and 348,002.80 is: 520,731.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,418.80 : 706,900.20 = 348,002.80 : x
  2. Step 2: Convert to fraction form
    472,418.80/706,900.20 = 348,002.80/x
  3. Step 3: Cross multiply
    472,418.80x = 706,900.20 × 348,002.80
  4. Step 4: Simplify right side
    472,418.80x = 246,003,248,920.56
  5. Step 5: Solve for x
    x = 246,003,248,920.56/472,418.80
  6. Step 6: Final answer
    x = 520,731.29

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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.