Home / 645,789.34-968,684.82-308,750.77

Finding the Fourth Proportional to 645,789.34, 968,684.82 and 308,750.77

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Solution

The fourth proportional to 645,789.34, 968,684.82 and 308,750.77 is: 463,126.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,789.34 : 968,684.82 = 308,750.77 : x
  2. Step 2: Convert to fraction form
    645,789.34/968,684.82 = 308,750.77/x
  3. Step 3: Cross multiply
    645,789.34x = 968,684.82 × 308,750.77
  4. Step 4: Simplify right side
    645,789.34x = 299,082,184,062.31
  5. Step 5: Solve for x
    x = 299,082,184,062.31/645,789.34
  6. Step 6: Final answer
    x = 463,126.54

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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.