Home / 685,417.54-1,028,372.28-306,306.52

Finding the Fourth Proportional to 685,417.54, 1,028,372.28 and 306,306.52

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Solution

The fourth proportional to 685,417.54, 1,028,372.28 and 306,306.52 is: 459,569.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,417.54 : 1,028,372.28 = 306,306.52 : x
  2. Step 2: Convert to fraction form
    685,417.54/1,028,372.28 = 306,306.52/x
  3. Step 3: Cross multiply
    685,417.54x = 1,028,372.28 × 306,306.52
  4. Step 4: Simplify right side
    685,417.54x = 314,997,134,351.27
  5. Step 5: Solve for x
    x = 314,997,134,351.27/685,417.54
  6. Step 6: Final answer
    x = 459,569.70

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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.