Home / 785,376.72-1,177,390.40-272,975.28

Finding the Fourth Proportional to 785,376.72, 1,177,390.40 and 272,975.28

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Solution

The fourth proportional to 785,376.72, 1,177,390.40 and 272,975.28 is: 409,228.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,376.72 : 1,177,390.40 = 272,975.28 : x
  2. Step 2: Convert to fraction form
    785,376.72/1,177,390.40 = 272,975.28/x
  3. Step 3: Cross multiply
    785,376.72x = 1,177,390.40 × 272,975.28
  4. Step 4: Simplify right side
    785,376.72x = 321,398,474,109.31
  5. Step 5: Solve for x
    x = 321,398,474,109.31/785,376.72
  6. Step 6: Final answer
    x = 409,228.42

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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.