Home / 1,216,789.42-1,678,662-700,419.76

Finding the Fourth Proportional to 1,216,789.42, 1,678,662 and 700,419.76

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Solution

The fourth proportional to 1,216,789.42, 1,678,662 and 700,419.76 is: 966,287.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,789.42 : 1,678,662 = 700,419.76 : x
  2. Step 2: Convert to fraction form
    1,216,789.42/1,678,662 = 700,419.76/x
  3. Step 3: Cross multiply
    1,216,789.42x = 1,678,662 × 700,419.76
  4. Step 4: Simplify right side
    1,216,789.42x = 1,175,768,035,161.12
  5. Step 5: Solve for x
    x = 1,175,768,035,161.12/1,216,789.42
  6. Step 6: Final answer
    x = 966,287.19

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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.