Home / 711,649.88-982,101.34-389,359.98

Finding the Fourth Proportional to 711,649.88, 982,101.34 and 389,359.98

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Solution

The fourth proportional to 711,649.88, 982,101.34 and 389,359.98 is: 537,330.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,649.88 : 982,101.34 = 389,359.98 : x
  2. Step 2: Convert to fraction form
    711,649.88/982,101.34 = 389,359.98/x
  3. Step 3: Cross multiply
    711,649.88x = 982,101.34 × 389,359.98
  4. Step 4: Simplify right side
    711,649.88x = 382,390,958,100.37
  5. Step 5: Solve for x
    x = 382,390,958,100.37/711,649.88
  6. Step 6: Final answer
    x = 537,330.18

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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.