Home / 628,821.76-867,789.62-342,357.56

Finding the Fourth Proportional to 628,821.76, 867,789.62 and 342,357.56

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Solution

The fourth proportional to 628,821.76, 867,789.62 and 342,357.56 is: 472,461.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,821.76 : 867,789.62 = 342,357.56 : x
  2. Step 2: Convert to fraction form
    628,821.76/867,789.62 = 342,357.56/x
  3. Step 3: Cross multiply
    628,821.76x = 867,789.62 × 342,357.56
  4. Step 4: Simplify right side
    628,821.76x = 297,094,336,896.53
  5. Step 5: Solve for x
    x = 297,094,336,896.53/628,821.76
  6. Step 6: Final answer
    x = 472,461.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.