Home / 685,526.91-1,028,279.35-186,890.91

Finding the Fourth Proportional to 685,526.91, 1,028,279.35 and 186,890.91

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Solution

The fourth proportional to 685,526.91, 1,028,279.35 and 186,890.91 is: 280,333.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,526.91 : 1,028,279.35 = 186,890.91 : x
  2. Step 2: Convert to fraction form
    685,526.91/1,028,279.35 = 186,890.91/x
  3. Step 3: Cross multiply
    685,526.91x = 1,028,279.35 × 186,890.91
  4. Step 4: Simplify right side
    685,526.91x = 192,176,063,455.71
  5. Step 5: Solve for x
    x = 192,176,063,455.71/685,526.91
  6. Step 6: Final answer
    x = 280,333.36

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.