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Finding the Fourth Proportional to 455,390.52, 628,474.86 and 264,463.80

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Solution

The fourth proportional to 455,390.52, 628,474.86 and 264,463.80 is: 364,980.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,390.52 : 628,474.86 = 264,463.80 : x
  2. Step 2: Convert to fraction form
    455,390.52/628,474.86 = 264,463.80/x
  3. Step 3: Cross multiply
    455,390.52x = 628,474.86 × 264,463.80
  4. Step 4: Simplify right side
    455,390.52x = 166,208,849,680.07
  5. Step 5: Solve for x
    x = 166,208,849,680.07/455,390.52
  6. Step 6: Final answer
    x = 364,980.92

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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.