Home / 1,433,912.65-1,978,798.89-789,329.50

Finding the Fourth Proportional to 1,433,912.65, 1,978,798.89 and 789,329.50

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Solution

The fourth proportional to 1,433,912.65, 1,978,798.89 and 789,329.50 is: 1,089,274.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433,912.65 : 1,978,798.89 = 789,329.50 : x
  2. Step 2: Convert to fraction form
    1,433,912.65/1,978,798.89 = 789,329.50/x
  3. Step 3: Cross multiply
    1,433,912.65x = 1,978,798.89 × 789,329.50
  4. Step 4: Simplify right side
    1,433,912.65x = 1,561,924,338,444.26
  5. Step 5: Solve for x
    x = 1,561,924,338,444.26/1,433,912.65
  6. Step 6: Final answer
    x = 1,089,274.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.