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Finding the Fourth Proportional to 682,846.56, 942,390.80 and 376,977.76

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Solution

The fourth proportional to 682,846.56, 942,390.80 and 376,977.76 is: 520,263.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,846.56 : 942,390.80 = 376,977.76 : x
  2. Step 2: Convert to fraction form
    682,846.56/942,390.80 = 376,977.76/x
  3. Step 3: Cross multiply
    682,846.56x = 942,390.80 × 376,977.76
  4. Step 4: Simplify right side
    682,846.56x = 355,260,372,828.61
  5. Step 5: Solve for x
    x = 355,260,372,828.61/682,846.56
  6. Step 6: Final answer
    x = 520,263.84

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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.