Home / 711,898.15-982,419.84-389,608.06

Finding the Fourth Proportional to 711,898.15, 982,419.84 and 389,608.06

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Solution

The fourth proportional to 711,898.15, 982,419.84 and 389,608.06 is: 537,659.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,898.15 : 982,419.84 = 389,608.06 : x
  2. Step 2: Convert to fraction form
    711,898.15/982,419.84 = 389,608.06/x
  3. Step 3: Cross multiply
    711,898.15x = 982,419.84 × 389,608.06
  4. Step 4: Simplify right side
    711,898.15x = 382,758,687,967.91
  5. Step 5: Solve for x
    x = 382,758,687,967.91/711,898.15
  6. Step 6: Final answer
    x = 537,659.34

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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.