Home / 711,972.96-982,484.84-389,620.78

Finding the Fourth Proportional to 711,972.96, 982,484.84 and 389,620.78

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Solution

The fourth proportional to 711,972.96, 982,484.84 and 389,620.78 is: 537,655.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,972.96 : 982,484.84 = 389,620.78 : x
  2. Step 2: Convert to fraction form
    711,972.96/982,484.84 = 389,620.78/x
  3. Step 3: Cross multiply
    711,972.96x = 982,484.84 × 389,620.78
  4. Step 4: Simplify right side
    711,972.96x = 382,796,513,743.29
  5. Step 5: Solve for x
    x = 382,796,513,743.29/711,972.96
  6. Step 6: Final answer
    x = 537,655.97

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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.