Home / 685,708.79-1,028,630.82-236,370.50

Finding the Fourth Proportional to 685,708.79, 1,028,630.82 and 236,370.50

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Solution

The fourth proportional to 685,708.79, 1,028,630.82 and 236,370.50 is: 354,579.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,708.79 : 1,028,630.82 = 236,370.50 : x
  2. Step 2: Convert to fraction form
    685,708.79/1,028,630.82 = 236,370.50/x
  3. Step 3: Cross multiply
    685,708.79x = 1,028,630.82 × 236,370.50
  4. Step 4: Simplify right side
    685,708.79x = 243,137,985,960.67
  5. Step 5: Solve for x
    x = 243,137,985,960.67/685,708.79
  6. Step 6: Final answer
    x = 354,579.07

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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.