Home / 1,081,172.77-1,491,770.96-645,505.50

Finding the Fourth Proportional to 1,081,172.77, 1,491,770.96 and 645,505.50

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Solution

The fourth proportional to 1,081,172.77, 1,491,770.96 and 645,505.50 is: 890,649.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081,172.77 : 1,491,770.96 = 645,505.50 : x
  2. Step 2: Convert to fraction form
    1,081,172.77/1,491,770.96 = 645,505.50/x
  3. Step 3: Cross multiply
    1,081,172.77x = 1,491,770.96 × 645,505.50
  4. Step 4: Simplify right side
    1,081,172.77x = 962,946,359,420.28
  5. Step 5: Solve for x
    x = 962,946,359,420.28/1,081,172.77
  6. Step 6: Final answer
    x = 890,649.84

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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.