Home / 685,643.20-1,028,464.80-508,933.60

Finding the Fourth Proportional to 685,643.20, 1,028,464.80 and 508,933.60

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Solution

The fourth proportional to 685,643.20, 1,028,464.80 and 508,933.60 is: 763,400.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,643.20 : 1,028,464.80 = 508,933.60 : x
  2. Step 2: Convert to fraction form
    685,643.20/1,028,464.80 = 508,933.60/x
  3. Step 3: Cross multiply
    685,643.20x = 1,028,464.80 × 508,933.60
  4. Step 4: Simplify right side
    685,643.20x = 523,420,293,137.28
  5. Step 5: Solve for x
    x = 523,420,293,137.28/685,643.20
  6. Step 6: Final answer
    x = 763,400.40

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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.