Home / 810,130.80-1,212,863.40-495,202.80

Finding the Fourth Proportional to 810,130.80, 1,212,863.40 and 495,202.80

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Solution

The fourth proportional to 810,130.80, 1,212,863.40 and 495,202.80 is: 741,378.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,130.80 : 1,212,863.40 = 495,202.80 : x
  2. Step 2: Convert to fraction form
    810,130.80/1,212,863.40 = 495,202.80/x
  3. Step 3: Cross multiply
    810,130.80x = 1,212,863.40 × 495,202.80
  4. Step 4: Simplify right side
    810,130.80x = 600,613,351,697.52
  5. Step 5: Solve for x
    x = 600,613,351,697.52/810,130.80
  6. Step 6: Final answer
    x = 741,378.25

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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.