Home / 1,389,744.70-2,084,617.05-1,312,330.30

Finding the Fourth Proportional to 1,389,744.70, 2,084,617.05 and 1,312,330.30

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Solution

The fourth proportional to 1,389,744.70, 2,084,617.05 and 1,312,330.30 is: 1,968,495.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,744.70 : 2,084,617.05 = 1,312,330.30 : x
  2. Step 2: Convert to fraction form
    1,389,744.70/2,084,617.05 = 1,312,330.30/x
  3. Step 3: Cross multiply
    1,389,744.70x = 2,084,617.05 × 1,312,330.30
  4. Step 4: Simplify right side
    1,389,744.70x = 2,735,706,118,611.62
  5. Step 5: Solve for x
    x = 2,735,706,118,611.62/1,389,744.70
  6. Step 6: Final answer
    x = 1,968,495.45

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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.