Home / 685,863.36-946,739.88-558,317.52

Finding the Fourth Proportional to 685,863.36, 946,739.88 and 558,317.52

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Solution

The fourth proportional to 685,863.36, 946,739.88 and 558,317.52 is: 770,680.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,863.36 : 946,739.88 = 558,317.52 : x
  2. Step 2: Convert to fraction form
    685,863.36/946,739.88 = 558,317.52/x
  3. Step 3: Cross multiply
    685,863.36x = 946,739.88 × 558,317.52
  4. Step 4: Simplify right side
    685,863.36x = 528,581,461,886.70
  5. Step 5: Solve for x
    x = 528,581,461,886.70/685,863.36
  6. Step 6: Final answer
    x = 770,680.42

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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.