Home / 678,100.60-1,018,317.30-479,812.60

Finding the Fourth Proportional to 678,100.60, 1,018,317.30 and 479,812.60

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Solution

The fourth proportional to 678,100.60, 1,018,317.30 and 479,812.60 is: 720,544.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,100.60 : 1,018,317.30 = 479,812.60 : x
  2. Step 2: Convert to fraction form
    678,100.60/1,018,317.30 = 479,812.60/x
  3. Step 3: Cross multiply
    678,100.60x = 1,018,317.30 × 479,812.60
  4. Step 4: Simplify right side
    678,100.60x = 488,601,471,337.98
  5. Step 5: Solve for x
    x = 488,601,471,337.98/678,100.60
  6. Step 6: Final answer
    x = 720,544.23

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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.