Home / 1,318,864.20-1,978,296.30-519,880.20

Finding the Fourth Proportional to 1,318,864.20, 1,978,296.30 and 519,880.20

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Solution

The fourth proportional to 1,318,864.20, 1,978,296.30 and 519,880.20 is: 779,820.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,864.20 : 1,978,296.30 = 519,880.20 : x
  2. Step 2: Convert to fraction form
    1,318,864.20/1,978,296.30 = 519,880.20/x
  3. Step 3: Cross multiply
    1,318,864.20x = 1,978,296.30 × 519,880.20
  4. Step 4: Simplify right side
    1,318,864.20x = 1,028,477,076,103.26
  5. Step 5: Solve for x
    x = 1,028,477,076,103.26/1,318,864.20
  6. Step 6: Final answer
    x = 779,820.30

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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.