Home / 685,420.04-1,028,376.04-306,309.02

Finding the Fourth Proportional to 685,420.04, 1,028,376.04 and 306,309.02

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Solution

The fourth proportional to 685,420.04, 1,028,376.04 and 306,309.02 is: 459,573.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,420.04 : 1,028,376.04 = 306,309.02 : x
  2. Step 2: Convert to fraction form
    685,420.04/1,028,376.04 = 306,309.02/x
  3. Step 3: Cross multiply
    685,420.04x = 1,028,376.04 × 306,309.02
  4. Step 4: Simplify right side
    685,420.04x = 315,000,857,003.88
  5. Step 5: Solve for x
    x = 315,000,857,003.88/685,420.04
  6. Step 6: Final answer
    x = 459,573.46

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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.