Home / 919,273.89-1,378,920.57-279,681.75

Finding the Fourth Proportional to 919,273.89, 1,378,920.57 and 279,681.75

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Solution

The fourth proportional to 919,273.89, 1,378,920.57 and 279,681.75 is: 419,525.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,273.89 : 1,378,920.57 = 279,681.75 : x
  2. Step 2: Convert to fraction form
    919,273.89/1,378,920.57 = 279,681.75/x
  3. Step 3: Cross multiply
    919,273.89x = 1,378,920.57 × 279,681.75
  4. Step 4: Simplify right side
    919,273.89x = 385,658,918,128.60
  5. Step 5: Solve for x
    x = 385,658,918,128.60/919,273.89
  6. Step 6: Final answer
    x = 419,525.59

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1.5x scale

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.