Home / 1,122,558.64-1,548,960.08-639,144.16

Finding the Fourth Proportional to 1,122,558.64, 1,548,960.08 and 639,144.16

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Solution

The fourth proportional to 1,122,558.64, 1,548,960.08 and 639,144.16 is: 881,921.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,558.64 : 1,548,960.08 = 639,144.16 : x
  2. Step 2: Convert to fraction form
    1,122,558.64/1,548,960.08 = 639,144.16/x
  3. Step 3: Cross multiply
    1,122,558.64x = 1,548,960.08 × 639,144.16
  4. Step 4: Simplify right side
    1,122,558.64x = 990,008,789,205.13
  5. Step 5: Solve for x
    x = 990,008,789,205.13/1,122,558.64
  6. Step 6: Final answer
    x = 881,921.67

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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.