Home / 862,643.88-1,190,459.78-495,180.36

Finding the Fourth Proportional to 862,643.88, 1,190,459.78 and 495,180.36

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Solution

The fourth proportional to 862,643.88, 1,190,459.78 and 495,180.36 is: 683,355.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,643.88 : 1,190,459.78 = 495,180.36 : x
  2. Step 2: Convert to fraction form
    862,643.88/1,190,459.78 = 495,180.36/x
  3. Step 3: Cross multiply
    862,643.88x = 1,190,459.78 × 495,180.36
  4. Step 4: Simplify right side
    862,643.88x = 589,492,302,425.92
  5. Step 5: Solve for x
    x = 589,492,302,425.92/862,643.88
  6. Step 6: Final answer
    x = 683,355.34

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Double scale
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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.