Home / 1,940,690.40-2,909,998.80-678,559.20

Finding the Fourth Proportional to 1,940,690.40, 2,909,998.80 and 678,559.20

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Solution

The fourth proportional to 1,940,690.40, 2,909,998.80 and 678,559.20 is: 1,017,476.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940,690.40 : 2,909,998.80 = 678,559.20 : x
  2. Step 2: Convert to fraction form
    1,940,690.40/2,909,998.80 = 678,559.20/x
  3. Step 3: Cross multiply
    1,940,690.40x = 2,909,998.80 × 678,559.20
  4. Step 4: Simplify right side
    1,940,690.40x = 1,974,606,457,728.96
  5. Step 5: Solve for x
    x = 1,974,606,457,728.96/1,940,690.40
  6. Step 6: Final answer
    x = 1,017,476.28

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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.