Home / 815,246.63-1,217,380.06-665,783.40

Finding the Fourth Proportional to 815,246.63, 1,217,380.06 and 665,783.40

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Solution

The fourth proportional to 815,246.63, 1,217,380.06 and 665,783.40 is: 994,191.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,246.63 : 1,217,380.06 = 665,783.40 : x
  2. Step 2: Convert to fraction form
    815,246.63/1,217,380.06 = 665,783.40/x
  3. Step 3: Cross multiply
    815,246.63x = 1,217,380.06 × 665,783.40
  4. Step 4: Simplify right side
    815,246.63x = 810,511,435,439.00
  5. Step 5: Solve for x
    x = 810,511,435,439.00/815,246.63
  6. Step 6: Final answer
    x = 994,191.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.