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Finding the Fourth Proportional to 455,389.02, 628,472.79 and 264,462.30

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Solution

The fourth proportional to 455,389.02, 628,472.79 and 264,462.30 is: 364,978.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,389.02 : 628,472.79 = 264,462.30 : x
  2. Step 2: Convert to fraction form
    455,389.02/628,472.79 = 264,462.30/x
  3. Step 3: Cross multiply
    455,389.02x = 628,472.79 × 264,462.30
  4. Step 4: Simplify right side
    455,389.02x = 166,207,359,530.82
  5. Step 5: Solve for x
    x = 166,207,359,530.82/455,389.02
  6. Step 6: Final answer
    x = 364,978.85

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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.