Home / 685,432.48-945,904.30-379,514.46

Finding the Fourth Proportional to 685,432.48, 945,904.30 and 379,514.46

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Solution

The fourth proportional to 685,432.48, 945,904.30 and 379,514.46 is: 523,734.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,432.48 : 945,904.30 = 379,514.46 : x
  2. Step 2: Convert to fraction form
    685,432.48/945,904.30 = 379,514.46/x
  3. Step 3: Cross multiply
    685,432.48x = 945,904.30 × 379,514.46
  4. Step 4: Simplify right side
    685,432.48x = 358,984,359,626.18
  5. Step 5: Solve for x
    x = 358,984,359,626.18/685,432.48
  6. Step 6: Final answer
    x = 523,734.10

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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.