Home / 711,975.96-982,488.98-389,623.79

Finding the Fourth Proportional to 711,975.96, 982,488.98 and 389,623.79

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Solution

The fourth proportional to 711,975.96, 982,488.98 and 389,623.79 is: 537,660.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,975.96 : 982,488.98 = 389,623.79 : x
  2. Step 2: Convert to fraction form
    711,975.96/982,488.98 = 389,623.79/x
  3. Step 3: Cross multiply
    711,975.96x = 982,488.98 × 389,623.79
  4. Step 4: Simplify right side
    711,975.96x = 382,801,073,160.27
  5. Step 5: Solve for x
    x = 382,801,073,160.27/711,975.96
  6. Step 6: Final answer
    x = 537,660.11

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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.