Home / 864,005.20-1,296,007.80-815,016.40

Finding the Fourth Proportional to 864,005.20, 1,296,007.80 and 815,016.40

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Solution

The fourth proportional to 864,005.20, 1,296,007.80 and 815,016.40 is: 1,222,524.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,005.20 : 1,296,007.80 = 815,016.40 : x
  2. Step 2: Convert to fraction form
    864,005.20/1,296,007.80 = 815,016.40/x
  3. Step 3: Cross multiply
    864,005.20x = 1,296,007.80 × 815,016.40
  4. Step 4: Simplify right side
    864,005.20x = 1,056,267,611,527.92
  5. Step 5: Solve for x
    x = 1,056,267,611,527.92/864,005.20
  6. Step 6: Final answer
    x = 1,222,524.60

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.