Home / 685,364.70-1,028,047.05-508,217.70

Finding the Fourth Proportional to 685,364.70, 1,028,047.05 and 508,217.70

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Solution

The fourth proportional to 685,364.70, 1,028,047.05 and 508,217.70 is: 762,326.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,364.70 : 1,028,047.05 = 508,217.70 : x
  2. Step 2: Convert to fraction form
    685,364.70/1,028,047.05 = 508,217.70/x
  3. Step 3: Cross multiply
    685,364.70x = 1,028,047.05 × 508,217.70
  4. Step 4: Simplify right side
    685,364.70x = 522,471,707,242.79
  5. Step 5: Solve for x
    x = 522,471,707,242.79/685,364.70
  6. Step 6: Final answer
    x = 762,326.55

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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.