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Finding the Fourth Proportional to 685,081.95, 961,214.25 and 685,081.95

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Solution

The fourth proportional to 685,081.95, 961,214.25 and 685,081.95 is: 961,214.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,081.95 : 961,214.25 = 685,081.95 : x
  2. Step 2: Convert to fraction form
    685,081.95/961,214.25 = 685,081.95/x
  3. Step 3: Cross multiply
    685,081.95x = 961,214.25 × 685,081.95
  4. Step 4: Simplify right side
    685,081.95x = 658,510,532,757.79
  5. Step 5: Solve for x
    x = 658,510,532,757.79/685,081.95
  6. Step 6: Final answer
    x = 961,214.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.