Home / 711,729.12-982,194.48-389,445.60

Finding the Fourth Proportional to 711,729.12, 982,194.48 and 389,445.60

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Solution

The fourth proportional to 711,729.12, 982,194.48 and 389,445.60 is: 537,439.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,729.12 : 982,194.48 = 389,445.60 : x
  2. Step 2: Convert to fraction form
    711,729.12/982,194.48 = 389,445.60/x
  3. Step 3: Cross multiply
    711,729.12x = 982,194.48 × 389,445.60
  4. Step 4: Simplify right side
    711,729.12x = 382,511,318,580.29
  5. Step 5: Solve for x
    x = 382,511,318,580.29/711,729.12
  6. Step 6: Final answer
    x = 537,439.47

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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.