Home / 681,315.40-1,021,973.10-443,369.80

Finding the Fourth Proportional to 681,315.40, 1,021,973.10 and 443,369.80

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Solution

The fourth proportional to 681,315.40, 1,021,973.10 and 443,369.80 is: 665,054.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,315.40 : 1,021,973.10 = 443,369.80 : x
  2. Step 2: Convert to fraction form
    681,315.40/1,021,973.10 = 443,369.80/x
  3. Step 3: Cross multiply
    681,315.40x = 1,021,973.10 × 443,369.80
  4. Step 4: Simplify right side
    681,315.40x = 453,112,008,952.38
  5. Step 5: Solve for x
    x = 453,112,008,952.38/681,315.40
  6. Step 6: Final answer
    x = 665,054.70

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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.