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Finding the Fourth Proportional to 490,915.14, 677,458.64 and 276,050.63

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Solution

The fourth proportional to 490,915.14, 677,458.64 and 276,050.63 is: 380,947.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,915.14 : 677,458.64 = 276,050.63 : x
  2. Step 2: Convert to fraction form
    490,915.14/677,458.64 = 276,050.63/x
  3. Step 3: Cross multiply
    490,915.14x = 677,458.64 × 276,050.63
  4. Step 4: Simplify right side
    490,915.14x = 187,012,879,603.40
  5. Step 5: Solve for x
    x = 187,012,879,603.40/490,915.14
  6. Step 6: Final answer
    x = 380,947.47

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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.