Home / 1,286,749.80-1,930,592.70-445,386.60

Finding the Fourth Proportional to 1,286,749.80, 1,930,592.70 and 445,386.60

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Solution

The fourth proportional to 1,286,749.80, 1,930,592.70 and 445,386.60 is: 668,241.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,749.80 : 1,930,592.70 = 445,386.60 : x
  2. Step 2: Convert to fraction form
    1,286,749.80/1,930,592.70 = 445,386.60/x
  3. Step 3: Cross multiply
    1,286,749.80x = 1,930,592.70 × 445,386.60
  4. Step 4: Simplify right side
    1,286,749.80x = 859,860,118,637.82
  5. Step 5: Solve for x
    x = 859,860,118,637.82/1,286,749.80
  6. Step 6: Final answer
    x = 668,241.89

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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.