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Finding the Fourth Proportional to 1,318,982.94, 1,977,145.20 and 519,955.20

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Solution

The fourth proportional to 1,318,982.94, 1,977,145.20 and 519,955.20 is: 779,408.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,982.94 : 1,977,145.20 = 519,955.20 : x
  2. Step 2: Convert to fraction form
    1,318,982.94/1,977,145.20 = 519,955.20/x
  3. Step 3: Cross multiply
    1,318,982.94x = 1,977,145.20 × 519,955.20
  4. Step 4: Simplify right side
    1,318,982.94x = 1,028,026,927,895.04
  5. Step 5: Solve for x
    x = 1,028,026,927,895.04/1,318,982.94
  6. Step 6: Final answer
    x = 779,408.81

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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.