Home / 861,209.51-1,291,887.16-262,175.63

Finding the Fourth Proportional to 861,209.51, 1,291,887.16 and 262,175.63

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Solution

The fourth proportional to 861,209.51, 1,291,887.16 and 262,175.63 is: 393,285.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,209.51 : 1,291,887.16 = 262,175.63 : x
  2. Step 2: Convert to fraction form
    861,209.51/1,291,887.16 = 262,175.63/x
  3. Step 3: Cross multiply
    861,209.51x = 1,291,887.16 × 262,175.63
  4. Step 4: Simplify right side
    861,209.51x = 338,701,322,947.04
  5. Step 5: Solve for x
    x = 338,701,322,947.04/861,209.51
  6. Step 6: Final answer
    x = 393,285.63

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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.