Home / 685,344.08-1,028,959.49-348,612.60

Finding the Fourth Proportional to 685,344.08, 1,028,959.49 and 348,612.60

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Solution

The fourth proportional to 685,344.08, 1,028,959.49 and 348,612.60 is: 523,398.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,344.08 : 1,028,959.49 = 348,612.60 : x
  2. Step 2: Convert to fraction form
    685,344.08/1,028,959.49 = 348,612.60/x
  3. Step 3: Cross multiply
    685,344.08x = 1,028,959.49 × 348,612.60
  4. Step 4: Simplify right side
    685,344.08x = 358,708,241,360.51
  5. Step 5: Solve for x
    x = 358,708,241,360.51/685,344.08
  6. Step 6: Final answer
    x = 523,398.76

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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.