Home / 990,112.36-1,484,930.66-457,121.56

Finding the Fourth Proportional to 990,112.36, 1,484,930.66 and 457,121.56

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Solution

The fourth proportional to 990,112.36, 1,484,930.66 and 457,121.56 is: 685,572.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,112.36 : 1,484,930.66 = 457,121.56 : x
  2. Step 2: Convert to fraction form
    990,112.36/1,484,930.66 = 457,121.56/x
  3. Step 3: Cross multiply
    990,112.36x = 1,484,930.66 × 457,121.56
  4. Step 4: Simplify right side
    990,112.36x = 678,793,819,791.03
  5. Step 5: Solve for x
    x = 678,793,819,791.03/990,112.36
  6. Step 6: Final answer
    x = 685,572.51

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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.