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Finding the Fourth Proportional to 455,431.30, 681,918.15 and 455,431.30

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Solution

The fourth proportional to 455,431.30, 681,918.15 and 455,431.30 is: 681,918.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,431.30 : 681,918.15 = 455,431.30 : x
  2. Step 2: Convert to fraction form
    455,431.30/681,918.15 = 455,431.30/x
  3. Step 3: Cross multiply
    455,431.30x = 681,918.15 × 455,431.30
  4. Step 4: Simplify right side
    455,431.30x = 310,566,869,548.10
  5. Step 5: Solve for x
    x = 310,566,869,548.10/455,431.30
  6. Step 6: Final answer
    x = 681,918.15

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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.