Home / 1,442,133.78-1,989,923.55-830,168.30

Finding the Fourth Proportional to 1,442,133.78, 1,989,923.55 and 830,168.30

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Solution

The fourth proportional to 1,442,133.78, 1,989,923.55 and 830,168.30 is: 1,145,504.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442,133.78 : 1,989,923.55 = 830,168.30 : x
  2. Step 2: Convert to fraction form
    1,442,133.78/1,989,923.55 = 830,168.30/x
  3. Step 3: Cross multiply
    1,442,133.78x = 1,989,923.55 × 830,168.30
  4. Step 4: Simplify right side
    1,442,133.78x = 1,651,971,440,683.85
  5. Step 5: Solve for x
    x = 1,651,971,440,683.85/1,442,133.78
  6. Step 6: Final answer
    x = 1,145,504.99

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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.