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Finding the Fourth Proportional to 455,548.80, 681,710.40 and 397,027.20

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Solution

The fourth proportional to 455,548.80, 681,710.40 and 397,027.20 is: 594,135.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,548.80 : 681,710.40 = 397,027.20 : x
  2. Step 2: Convert to fraction form
    455,548.80/681,710.40 = 397,027.20/x
  3. Step 3: Cross multiply
    455,548.80x = 681,710.40 × 397,027.20
  4. Step 4: Simplify right side
    455,548.80x = 270,657,571,322.88
  5. Step 5: Solve for x
    x = 270,657,571,322.88/455,548.80
  6. Step 6: Final answer
    x = 594,135.19

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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.