Home / 643,893.37-888,576.29-402,316.04

Finding the Fourth Proportional to 643,893.37, 888,576.29 and 402,316.04

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Solution

The fourth proportional to 643,893.37, 888,576.29 and 402,316.04 is: 555,198.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,893.37 : 888,576.29 = 402,316.04 : x
  2. Step 2: Convert to fraction form
    643,893.37/888,576.29 = 402,316.04/x
  3. Step 3: Cross multiply
    643,893.37x = 888,576.29 × 402,316.04
  4. Step 4: Simplify right side
    643,893.37x = 357,488,494,230.69
  5. Step 5: Solve for x
    x = 357,488,494,230.69/643,893.37
  6. Step 6: Final answer
    x = 555,198.28

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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.