Home / 1,434,136.60-1,979,033.37-789,430.87

Finding the Fourth Proportional to 1,434,136.60, 1,979,033.37 and 789,430.87

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Solution

The fourth proportional to 1,434,136.60, 1,979,033.37 and 789,430.87 is: 1,089,373.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434,136.60 : 1,979,033.37 = 789,430.87 : x
  2. Step 2: Convert to fraction form
    1,434,136.60/1,979,033.37 = 789,430.87/x
  3. Step 3: Cross multiply
    1,434,136.60x = 1,979,033.37 × 789,430.87
  4. Step 4: Simplify right side
    1,434,136.60x = 1,562,310,035,038.13
  5. Step 5: Solve for x
    x = 1,562,310,035,038.13/1,434,136.60
  6. Step 6: Final answer
    x = 1,089,373.24

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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.