Home / 1,245,647.30-1,718,993.25-672,687.45

Finding the Fourth Proportional to 1,245,647.30, 1,718,993.25 and 672,687.45

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Solution

The fourth proportional to 1,245,647.30, 1,718,993.25 and 672,687.45 is: 928,308.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,647.30 : 1,718,993.25 = 672,687.45 : x
  2. Step 2: Convert to fraction form
    1,245,647.30/1,718,993.25 = 672,687.45/x
  3. Step 3: Cross multiply
    1,245,647.30x = 1,718,993.25 × 672,687.45
  4. Step 4: Simplify right side
    1,245,647.30x = 1,156,345,185,909.71
  5. Step 5: Solve for x
    x = 1,156,345,185,909.71/1,245,647.30
  6. Step 6: Final answer
    x = 928,308.67

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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.