Home / 451,944.48-678,139.20-319,674.72

Finding the Fourth Proportional to 451,944.48, 678,139.20 and 319,674.72

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Solution

The fourth proportional to 451,944.48, 678,139.20 and 319,674.72 is: 479,669.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,944.48 : 678,139.20 = 319,674.72 : x
  2. Step 2: Convert to fraction form
    451,944.48/678,139.20 = 319,674.72/x
  3. Step 3: Cross multiply
    451,944.48x = 678,139.20 × 319,674.72
  4. Step 4: Simplify right side
    451,944.48x = 216,783,958,881.02
  5. Step 5: Solve for x
    x = 216,783,958,881.02/451,944.48
  6. Step 6: Final answer
    x = 479,669.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.