Home / 685,897.09-946,596.13-380,069.39

Finding the Fourth Proportional to 685,897.09, 946,596.13 and 380,069.39

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Solution

The fourth proportional to 685,897.09, 946,596.13 and 380,069.39 is: 524,527.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,897.09 : 946,596.13 = 380,069.39 : x
  2. Step 2: Convert to fraction form
    685,897.09/946,596.13 = 380,069.39/x
  3. Step 3: Cross multiply
    685,897.09x = 946,596.13 × 380,069.39
  4. Step 4: Simplify right side
    685,897.09x = 359,772,215,121.78
  5. Step 5: Solve for x
    x = 359,772,215,121.78/685,897.09
  6. Step 6: Final answer
    x = 524,527.98

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Double scale
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Similar ratio
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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.