Home / 685,177.48-945,520.80-379,254.46

Finding the Fourth Proportional to 685,177.48, 945,520.80 and 379,254.46

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Solution

The fourth proportional to 685,177.48, 945,520.80 and 379,254.46 is: 523,357.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,177.48 : 945,520.80 = 379,254.46 : x
  2. Step 2: Convert to fraction form
    685,177.48/945,520.80 = 379,254.46/x
  3. Step 3: Cross multiply
    685,177.48x = 945,520.80 × 379,254.46
  4. Step 4: Simplify right side
    685,177.48x = 358,592,980,422.77
  5. Step 5: Solve for x
    x = 358,592,980,422.77/685,177.48
  6. Step 6: Final answer
    x = 523,357.80

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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.