Home / 1,690,636.16-2,535,964.32-428,467.52

Finding the Fourth Proportional to 1,690,636.16, 2,535,964.32 and 428,467.52

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Solution

The fourth proportional to 1,690,636.16, 2,535,964.32 and 428,467.52 is: 642,703.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690,636.16 : 2,535,964.32 = 428,467.52 : x
  2. Step 2: Convert to fraction form
    1,690,636.16/2,535,964.32 = 428,467.52/x
  3. Step 3: Cross multiply
    1,690,636.16x = 2,535,964.32 × 428,467.52
  4. Step 4: Simplify right side
    1,690,636.16x = 1,086,578,342,998.89
  5. Step 5: Solve for x
    x = 1,086,578,342,998.89/1,690,636.16
  6. Step 6: Final answer
    x = 642,703.83

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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.