Home / 1,286,622.66-1,930,562.78-909,963.89

Finding the Fourth Proportional to 1,286,622.66, 1,930,562.78 and 909,963.89

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Solution

The fourth proportional to 1,286,622.66, 1,930,562.78 and 909,963.89 is: 1,365,390.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,622.66 : 1,930,562.78 = 909,963.89 : x
  2. Step 2: Convert to fraction form
    1,286,622.66/1,930,562.78 = 909,963.89/x
  3. Step 3: Cross multiply
    1,286,622.66x = 1,930,562.78 × 909,963.89
  4. Step 4: Simplify right side
    1,286,622.66x = 1,756,742,402,975.38
  5. Step 5: Solve for x
    x = 1,756,742,402,975.38/1,286,622.66
  6. Step 6: Final answer
    x = 1,365,390.54

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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.