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Finding the Fourth Proportional to 455,422.30, 681,904.65 and 455,422.30

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Solution

The fourth proportional to 455,422.30, 681,904.65 and 455,422.30 is: 681,904.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,422.30 : 681,904.65 = 455,422.30 : x
  2. Step 2: Convert to fraction form
    455,422.30/681,904.65 = 455,422.30/x
  3. Step 3: Cross multiply
    455,422.30x = 681,904.65 × 455,422.30
  4. Step 4: Simplify right side
    455,422.30x = 310,554,584,083.70
  5. Step 5: Solve for x
    x = 310,554,584,083.70/455,422.30
  6. Step 6: Final answer
    x = 681,904.65

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1.5x scale

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.