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Finding the Fourth Proportional to 702,768.36, 969,820.74 and 380,478.54

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Solution

The fourth proportional to 702,768.36, 969,820.74 and 380,478.54 is: 525,060.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,768.36 : 969,820.74 = 380,478.54 : x
  2. Step 2: Convert to fraction form
    702,768.36/969,820.74 = 380,478.54/x
  3. Step 3: Cross multiply
    702,768.36x = 969,820.74 × 380,478.54
  4. Step 4: Simplify right side
    702,768.36x = 368,995,979,216.92
  5. Step 5: Solve for x
    x = 368,995,979,216.92/702,768.36
  6. Step 6: Final answer
    x = 525,060.60

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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.