Home / 399,247,769.40-550,177,089.48-305,268,399.08

Finding the Fourth Proportional to 399,247,769.40, 550,177,089.48 and 305,268,399.08

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Solution

The fourth proportional to 399,247,769.40, 550,177,089.48 and 305,268,399.08 is: 420,670,300.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,247,769.40 : 550,177,089.48 = 305,268,399.08 : x
  2. Step 2: Convert to fraction form
    399,247,769.40/550,177,089.48 = 305,268,399.08/x
  3. Step 3: Cross multiply
    399,247,769.40x = 550,177,089.48 × 305,268,399.08
  4. Step 4: Simplify right side
    399,247,769.40x = 167,951,679,316,053,504
  5. Step 5: Solve for x
    x = 167,951,679,316,053,504/399,247,769.40
  6. Step 6: Final answer
    x = 420,670,300.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.