Home / 1,326,353.70-1,989,918.07-427,775.55

Finding the Fourth Proportional to 1,326,353.70, 1,989,918.07 and 427,775.55

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Solution

The fourth proportional to 1,326,353.70, 1,989,918.07 and 427,775.55 is: 641,788.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,353.70 : 1,989,918.07 = 427,775.55 : x
  2. Step 2: Convert to fraction form
    1,326,353.70/1,989,918.07 = 427,775.55/x
  3. Step 3: Cross multiply
    1,326,353.70x = 1,989,918.07 × 427,775.55
  4. Step 4: Simplify right side
    1,326,353.70x = 851,238,290,723.79
  5. Step 5: Solve for x
    x = 851,238,290,723.79/1,326,353.70
  6. Step 6: Final answer
    x = 641,788.30

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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.