Home / 685,328.58-945,784.35-383,522.58

Finding the Fourth Proportional to 685,328.58, 945,784.35 and 383,522.58

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Solution

The fourth proportional to 685,328.58, 945,784.35 and 383,522.58 is: 529,278.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,328.58 : 945,784.35 = 383,522.58 : x
  2. Step 2: Convert to fraction form
    685,328.58/945,784.35 = 383,522.58/x
  3. Step 3: Cross multiply
    685,328.58x = 945,784.35 × 383,522.58
  4. Step 4: Simplify right side
    685,328.58x = 362,729,654,035.62
  5. Step 5: Solve for x
    x = 362,729,654,035.62/685,328.58
  6. Step 6: Final answer
    x = 529,278.46

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Double scale
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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.