Home / 711,910.08-982,422.80-389,613.76

Finding the Fourth Proportional to 711,910.08, 982,422.80 and 389,613.76

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Solution

The fourth proportional to 711,910.08, 982,422.80 and 389,613.76 is: 537,659.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,910.08 : 982,422.80 = 389,613.76 : x
  2. Step 2: Convert to fraction form
    711,910.08/982,422.80 = 389,613.76/x
  3. Step 3: Cross multiply
    711,910.08x = 982,422.80 × 389,613.76
  4. Step 4: Simplify right side
    711,910.08x = 382,765,441,017.73
  5. Step 5: Solve for x
    x = 382,765,441,017.73/711,910.08
  6. Step 6: Final answer
    x = 537,659.81

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1.5x scale

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.