Home / 715,629.96-987,570.77-388,944.81

Finding the Fourth Proportional to 715,629.96, 987,570.77 and 388,944.81

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Solution

The fourth proportional to 715,629.96, 987,570.77 and 388,944.81 is: 536,744.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,629.96 : 987,570.77 = 388,944.81 : x
  2. Step 2: Convert to fraction form
    715,629.96/987,570.77 = 388,944.81/x
  3. Step 3: Cross multiply
    715,629.96x = 987,570.77 × 388,944.81
  4. Step 4: Simplify right side
    715,629.96x = 384,110,523,554.48
  5. Step 5: Solve for x
    x = 384,110,523,554.48/715,629.96
  6. Step 6: Final answer
    x = 536,744.61

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1.5x scale

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.