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Finding the Fourth Proportional to 455,387.52, 628,470.72 and 264,460.80

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Solution

The fourth proportional to 455,387.52, 628,470.72 and 264,460.80 is: 364,976.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,387.52 : 628,470.72 = 264,460.80 : x
  2. Step 2: Convert to fraction form
    455,387.52/628,470.72 = 264,460.80/x
  3. Step 3: Cross multiply
    455,387.52x = 628,470.72 × 264,460.80
  4. Step 4: Simplify right side
    455,387.52x = 166,205,869,387.78
  5. Step 5: Solve for x
    x = 166,205,869,387.78/455,387.52
  6. Step 6: Final answer
    x = 364,976.78

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1.5x scale

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.