Home / 1,238,566.25-1,857,403.53-428,730.62

Finding the Fourth Proportional to 1,238,566.25, 1,857,403.53 and 428,730.62

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Solution

The fourth proportional to 1,238,566.25, 1,857,403.53 and 428,730.62 is: 642,941.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,566.25 : 1,857,403.53 = 428,730.62 : x
  2. Step 2: Convert to fraction form
    1,238,566.25/1,857,403.53 = 428,730.62/x
  3. Step 3: Cross multiply
    1,238,566.25x = 1,857,403.53 × 428,730.62
  4. Step 4: Simplify right side
    1,238,566.25x = 796,325,757,720.07
  5. Step 5: Solve for x
    x = 796,325,757,720.07/1,238,566.25
  6. Step 6: Final answer
    x = 642,941.60

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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.