Home / 685,554.40-1,028,427.36-286,103.71

Finding the Fourth Proportional to 685,554.40, 1,028,427.36 and 286,103.71

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Solution

The fourth proportional to 685,554.40, 1,028,427.36 and 286,103.71 is: 429,195.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,554.40 : 1,028,427.36 = 286,103.71 : x
  2. Step 2: Convert to fraction form
    685,554.40/1,028,427.36 = 286,103.71/x
  3. Step 3: Cross multiply
    685,554.40x = 1,028,427.36 × 286,103.71
  4. Step 4: Simplify right side
    685,554.40x = 294,236,878,019.37
  5. Step 5: Solve for x
    x = 294,236,878,019.37/685,554.40
  6. Step 6: Final answer
    x = 429,195.52

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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.