Home / 1,434,385.89-1,979,496.08-789,829.15

Finding the Fourth Proportional to 1,434,385.89, 1,979,496.08 and 789,829.15

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Solution

The fourth proportional to 1,434,385.89, 1,979,496.08 and 789,829.15 is: 1,089,988.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434,385.89 : 1,979,496.08 = 789,829.15 : x
  2. Step 2: Convert to fraction form
    1,434,385.89/1,979,496.08 = 789,829.15/x
  3. Step 3: Cross multiply
    1,434,385.89x = 1,979,496.08 × 789,829.15
  4. Step 4: Simplify right side
    1,434,385.89x = 1,563,463,704,320.16
  5. Step 5: Solve for x
    x = 1,563,463,704,320.16/1,434,385.89
  6. Step 6: Final answer
    x = 1,089,988.21

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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.