Home / 1,291,885.58-1,782,789.21-718,915.94

Finding the Fourth Proportional to 1,291,885.58, 1,782,789.21 and 718,915.94

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Solution

The fourth proportional to 1,291,885.58, 1,782,789.21 and 718,915.94 is: 992,096.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,885.58 : 1,782,789.21 = 718,915.94 : x
  2. Step 2: Convert to fraction form
    1,291,885.58/1,782,789.21 = 718,915.94/x
  3. Step 3: Cross multiply
    1,291,885.58x = 1,782,789.21 × 718,915.94
  4. Step 4: Simplify right side
    1,291,885.58x = 1,281,675,580,729.01
  5. Step 5: Solve for x
    x = 1,281,675,580,729.01/1,291,885.58
  6. Step 6: Final answer
    x = 992,096.82

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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.