Home / 1,320,072.50-1,980,941.74-561,912.80

Finding the Fourth Proportional to 1,320,072.50, 1,980,941.74 and 561,912.80

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Solution

The fourth proportional to 1,320,072.50, 1,980,941.74 and 561,912.80 is: 843,223.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,072.50 : 1,980,941.74 = 561,912.80 : x
  2. Step 2: Convert to fraction form
    1,320,072.50/1,980,941.74 = 561,912.80/x
  3. Step 3: Cross multiply
    1,320,072.50x = 1,980,941.74 × 561,912.80
  4. Step 4: Simplify right side
    1,320,072.50x = 1,113,116,523,307.84
  5. Step 5: Solve for x
    x = 1,113,116,523,307.84/1,320,072.50
  6. Step 6: Final answer
    x = 843,223.78

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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.