Home / 728,405.64-1,091,935.50-461,358.60

Finding the Fourth Proportional to 728,405.64, 1,091,935.50 and 461,358.60

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Solution

The fourth proportional to 728,405.64, 1,091,935.50 and 461,358.60 is: 691,611.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,405.64 : 1,091,935.50 = 461,358.60 : x
  2. Step 2: Convert to fraction form
    728,405.64/1,091,935.50 = 461,358.60/x
  3. Step 3: Cross multiply
    728,405.64x = 1,091,935.50 × 461,358.60
  4. Step 4: Simplify right side
    728,405.64x = 503,773,833,570.30
  5. Step 5: Solve for x
    x = 503,773,833,570.30/728,405.64
  6. Step 6: Final answer
    x = 691,611.66

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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.