Home / 1,422,547.80-2,133,821.70-1,318,867.80

Finding the Fourth Proportional to 1,422,547.80, 2,133,821.70 and 1,318,867.80

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Solution

The fourth proportional to 1,422,547.80, 2,133,821.70 and 1,318,867.80 is: 1,978,301.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422,547.80 : 2,133,821.70 = 1,318,867.80 : x
  2. Step 2: Convert to fraction form
    1,422,547.80/2,133,821.70 = 1,318,867.80/x
  3. Step 3: Cross multiply
    1,422,547.80x = 2,133,821.70 × 1,318,867.80
  4. Step 4: Simplify right side
    1,422,547.80x = 2,814,228,731,071.26
  5. Step 5: Solve for x
    x = 2,814,228,731,071.26/1,422,547.80
  6. Step 6: Final answer
    x = 1,978,301.70

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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.