Home / 990,110-1,366,238.16-554,466.56

Finding the Fourth Proportional to 990,110, 1,366,238.16 and 554,466.56

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Solution

The fourth proportional to 990,110, 1,366,238.16 and 554,466.56 is: 765,100.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,110 : 1,366,238.16 = 554,466.56 : x
  2. Step 2: Convert to fraction form
    990,110/1,366,238.16 = 554,466.56/x
  3. Step 3: Cross multiply
    990,110x = 1,366,238.16 × 554,466.56
  4. Step 4: Simplify right side
    990,110x = 757,533,372,715.93
  5. Step 5: Solve for x
    x = 757,533,372,715.93/990,110
  6. Step 6: Final answer
    x = 765,100.21

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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.