Home / 911,249.12-1,257,527.88-497,791.60

Finding the Fourth Proportional to 911,249.12, 1,257,527.88 and 497,791.60

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Solution

The fourth proportional to 911,249.12, 1,257,527.88 and 497,791.60 is: 686,954.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,249.12 : 1,257,527.88 = 497,791.60 : x
  2. Step 2: Convert to fraction form
    911,249.12/1,257,527.88 = 497,791.60/x
  3. Step 3: Cross multiply
    911,249.12x = 1,257,527.88 × 497,791.60
  4. Step 4: Simplify right side
    911,249.12x = 625,986,815,429.81
  5. Step 5: Solve for x
    x = 625,986,815,429.81/911,249.12
  6. Step 6: Final answer
    x = 686,954.64

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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.