Home / 1,318,982.40-1,978,084.80-519,998.40

Finding the Fourth Proportional to 1,318,982.40, 1,978,084.80 and 519,998.40

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Solution

The fourth proportional to 1,318,982.40, 1,978,084.80 and 519,998.40 is: 779,844.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,982.40 : 1,978,084.80 = 519,998.40 : x
  2. Step 2: Convert to fraction form
    1,318,982.40/1,978,084.80 = 519,998.40/x
  3. Step 3: Cross multiply
    1,318,982.40x = 1,978,084.80 × 519,998.40
  4. Step 4: Simplify right side
    1,318,982.40x = 1,028,600,931,064.32
  5. Step 5: Solve for x
    x = 1,028,600,931,064.32/1,318,982.40
  6. Step 6: Final answer
    x = 779,844.32

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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.