Home / 1,820,838.80-2,732,023.65-978,406.40

Finding the Fourth Proportional to 1,820,838.80, 2,732,023.65 and 978,406.40

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Solution

The fourth proportional to 1,820,838.80, 2,732,023.65 and 978,406.40 is: 1,468,020.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,820,838.80 : 2,732,023.65 = 978,406.40 : x
  2. Step 2: Convert to fraction form
    1,820,838.80/2,732,023.65 = 978,406.40/x
  3. Step 3: Cross multiply
    1,820,838.80x = 2,732,023.65 × 978,406.40
  4. Step 4: Simplify right side
    1,820,838.80x = 2,673,029,424,111.36
  5. Step 5: Solve for x
    x = 2,673,029,424,111.36/1,820,838.80
  6. Step 6: Final answer
    x = 1,468,020.91

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.