Home / 711,683.10-982,122.03-389,394.54

Finding the Fourth Proportional to 711,683.10, 982,122.03 and 389,394.54

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Solution

The fourth proportional to 711,683.10, 982,122.03 and 389,394.54 is: 537,364.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,683.10 : 982,122.03 = 389,394.54 : x
  2. Step 2: Convert to fraction form
    711,683.10/982,122.03 = 389,394.54/x
  3. Step 3: Cross multiply
    711,683.10x = 982,122.03 × 389,394.54
  4. Step 4: Simplify right side
    711,683.10x = 382,432,956,095.72
  5. Step 5: Solve for x
    x = 382,432,956,095.72/711,683.10
  6. Step 6: Final answer
    x = 537,364.11

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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.