Home / 665,939.40-918,819.24-379,453.32

Finding the Fourth Proportional to 665,939.40, 918,819.24 and 379,453.32

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Solution

The fourth proportional to 665,939.40, 918,819.24 and 379,453.32 is: 523,544.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,939.40 : 918,819.24 = 379,453.32 : x
  2. Step 2: Convert to fraction form
    665,939.40/918,819.24 = 379,453.32/x
  3. Step 3: Cross multiply
    665,939.40x = 918,819.24 × 379,453.32
  4. Step 4: Simplify right side
    665,939.40x = 348,649,011,097.88
  5. Step 5: Solve for x
    x = 348,649,011,097.88/665,939.40
  6. Step 6: Final answer
    x = 523,544.65

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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.