Home / 1,290,114.90-1,935,178.53-391,564.44

Finding the Fourth Proportional to 1,290,114.90, 1,935,178.53 and 391,564.44

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Solution

The fourth proportional to 1,290,114.90, 1,935,178.53 and 391,564.44 is: 587,348.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,114.90 : 1,935,178.53 = 391,564.44 : x
  2. Step 2: Convert to fraction form
    1,290,114.90/1,935,178.53 = 391,564.44/x
  3. Step 3: Cross multiply
    1,290,114.90x = 1,935,178.53 × 391,564.44
  4. Step 4: Simplify right side
    1,290,114.90x = 757,747,097,399.47
  5. Step 5: Solve for x
    x = 757,747,097,399.47/1,290,114.90
  6. Step 6: Final answer
    x = 587,348.54

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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.