Home / 1,111,099.67-1,666,651.64-428,308.05

Finding the Fourth Proportional to 1,111,099.67, 1,666,651.64 and 428,308.05

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Solution

The fourth proportional to 1,111,099.67, 1,666,651.64 and 428,308.05 is: 642,462.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,111,099.67 : 1,666,651.64 = 428,308.05 : x
  2. Step 2: Convert to fraction form
    1,111,099.67/1,666,651.64 = 428,308.05/x
  3. Step 3: Cross multiply
    1,111,099.67x = 1,666,651.64 × 428,308.05
  4. Step 4: Simplify right side
    1,111,099.67x = 713,840,313,957.70
  5. Step 5: Solve for x
    x = 713,840,313,957.70/1,111,099.67
  6. Step 6: Final answer
    x = 642,462.90

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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.