Home / 685,419.04-1,028,374.53-306,308.02

Finding the Fourth Proportional to 685,419.04, 1,028,374.53 and 306,308.02

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Solution

The fourth proportional to 685,419.04, 1,028,374.53 and 306,308.02 is: 459,571.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,419.04 : 1,028,374.53 = 306,308.02 : x
  2. Step 2: Convert to fraction form
    685,419.04/1,028,374.53 = 306,308.02/x
  3. Step 3: Cross multiply
    685,419.04x = 1,028,374.53 × 306,308.02
  4. Step 4: Simplify right side
    685,419.04x = 314,999,366,102.73
  5. Step 5: Solve for x
    x = 314,999,366,102.73/685,419.04
  6. Step 6: Final answer
    x = 459,571.95

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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.