Home / 1,439,021.88-2,158,156.80-427,871.58

Finding the Fourth Proportional to 1,439,021.88, 2,158,156.80 and 427,871.58

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Solution

The fourth proportional to 1,439,021.88, 2,158,156.80 and 427,871.58 is: 641,695.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439,021.88 : 2,158,156.80 = 427,871.58 : x
  2. Step 2: Convert to fraction form
    1,439,021.88/2,158,156.80 = 427,871.58/x
  3. Step 3: Cross multiply
    1,439,021.88x = 2,158,156.80 × 427,871.58
  4. Step 4: Simplify right side
    1,439,021.88x = 923,413,959,903.74
  5. Step 5: Solve for x
    x = 923,413,959,903.74/1,439,021.88
  6. Step 6: Final answer
    x = 641,695.57

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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.