Home / 728,361.69-1,090,425.06-423,827.72

Finding the Fourth Proportional to 728,361.69, 1,090,425.06 and 423,827.72

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Solution

The fourth proportional to 728,361.69, 1,090,425.06 and 423,827.72 is: 634,509.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,361.69 : 1,090,425.06 = 423,827.72 : x
  2. Step 2: Convert to fraction form
    728,361.69/1,090,425.06 = 423,827.72/x
  3. Step 3: Cross multiply
    728,361.69x = 1,090,425.06 × 423,827.72
  4. Step 4: Simplify right side
    728,361.69x = 462,152,361,558.54
  5. Step 5: Solve for x
    x = 462,152,361,558.54/728,361.69
  6. Step 6: Final answer
    x = 634,509.43

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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.