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Finding the Fourth Proportional to 702,738.36, 969,779.34 and 380,448.54

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Solution

The fourth proportional to 702,738.36, 969,779.34 and 380,448.54 is: 525,019.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,738.36 : 969,779.34 = 380,448.54 : x
  2. Step 2: Convert to fraction form
    702,738.36/969,779.34 = 380,448.54/x
  3. Step 3: Cross multiply
    702,738.36x = 969,779.34 × 380,448.54
  4. Step 4: Simplify right side
    702,738.36x = 368,951,134,025.16
  5. Step 5: Solve for x
    x = 368,951,134,025.16/702,738.36
  6. Step 6: Final answer
    x = 525,019.20

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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.