Home / 992,403.40-1,489,097.70-393,351.42

Finding the Fourth Proportional to 992,403.40, 1,489,097.70 and 393,351.42

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Solution

The fourth proportional to 992,403.40, 1,489,097.70 and 393,351.42 is: 590,222.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,403.40 : 1,489,097.70 = 393,351.42 : x
  2. Step 2: Convert to fraction form
    992,403.40/1,489,097.70 = 393,351.42/x
  3. Step 3: Cross multiply
    992,403.40x = 1,489,097.70 × 393,351.42
  4. Step 4: Simplify right side
    992,403.40x = 585,738,694,813.73
  5. Step 5: Solve for x
    x = 585,738,694,813.73/992,403.40
  6. Step 6: Final answer
    x = 590,222.38

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1.5x scale

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.