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Finding the Fourth Proportional to 665,700.88, 918,671.44 and 359,776.56

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Solution

The fourth proportional to 665,700.88, 918,671.44 and 359,776.56 is: 496,493.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,700.88 : 918,671.44 = 359,776.56 : x
  2. Step 2: Convert to fraction form
    665,700.88/918,671.44 = 359,776.56/x
  3. Step 3: Cross multiply
    665,700.88x = 918,671.44 × 359,776.56
  4. Step 4: Simplify right side
    665,700.88x = 330,516,450,453.45
  5. Step 5: Solve for x
    x = 330,516,450,453.45/665,700.88
  6. Step 6: Final answer
    x = 496,493.94

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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.