Home / 1,297,705.60-1,946,704.20-399,140.20

Finding the Fourth Proportional to 1,297,705.60, 1,946,704.20 and 399,140.20

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Solution

The fourth proportional to 1,297,705.60, 1,946,704.20 and 399,140.20 is: 598,755.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297,705.60 : 1,946,704.20 = 399,140.20 : x
  2. Step 2: Convert to fraction form
    1,297,705.60/1,946,704.20 = 399,140.20/x
  3. Step 3: Cross multiply
    1,297,705.60x = 1,946,704.20 × 399,140.20
  4. Step 4: Simplify right side
    1,297,705.60x = 777,007,903,728.84
  5. Step 5: Solve for x
    x = 777,007,903,728.84/1,297,705.60
  6. Step 6: Final answer
    x = 598,755.14

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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.