Home / 861,880.32-1,292,816.92-262,839.72

Finding the Fourth Proportional to 861,880.32, 1,292,816.92 and 262,839.72

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Solution

The fourth proportional to 861,880.32, 1,292,816.92 and 262,839.72 is: 394,258.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,880.32 : 1,292,816.92 = 262,839.72 : x
  2. Step 2: Convert to fraction form
    861,880.32/1,292,816.92 = 262,839.72/x
  3. Step 3: Cross multiply
    861,880.32x = 1,292,816.92 × 262,839.72
  4. Step 4: Simplify right side
    861,880.32x = 339,803,637,264.06
  5. Step 5: Solve for x
    x = 339,803,637,264.06/861,880.32
  6. Step 6: Final answer
    x = 394,258.49

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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.