Home / 711,901.65-982,424.67-389,611.56

Finding the Fourth Proportional to 711,901.65, 982,424.67 and 389,611.56

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Solution

The fourth proportional to 711,901.65, 982,424.67 and 389,611.56 is: 537,664.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,901.65 : 982,424.67 = 389,611.56 : x
  2. Step 2: Convert to fraction form
    711,901.65/982,424.67 = 389,611.56/x
  3. Step 3: Cross multiply
    711,901.65x = 982,424.67 × 389,611.56
  4. Step 4: Simplify right side
    711,901.65x = 382,764,008,261.19
  5. Step 5: Solve for x
    x = 382,764,008,261.19/711,901.65
  6. Step 6: Final answer
    x = 537,664.17

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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.