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Finding the Fourth Proportional to 685,254.35, 945,639.56 and 379,324.26

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Solution

The fourth proportional to 685,254.35, 945,639.56 and 379,324.26 is: 523,461.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,254.35 : 945,639.56 = 379,324.26 : x
  2. Step 2: Convert to fraction form
    685,254.35/945,639.56 = 379,324.26/x
  3. Step 3: Cross multiply
    685,254.35x = 945,639.56 × 379,324.26
  4. Step 4: Simplify right side
    685,254.35x = 358,704,024,427.10
  5. Step 5: Solve for x
    x = 358,704,024,427.10/685,254.35
  6. Step 6: Final answer
    x = 523,461.14

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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.