Home / 628,828.76-867,799.30-342,364.56

Finding the Fourth Proportional to 628,828.76, 867,799.30 and 342,364.56

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Solution

The fourth proportional to 628,828.76, 867,799.30 and 342,364.56 is: 472,471.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,828.76 : 867,799.30 = 342,364.56 : x
  2. Step 2: Convert to fraction form
    628,828.76/867,799.30 = 342,364.56/x
  3. Step 3: Cross multiply
    628,828.76x = 867,799.30 × 342,364.56
  4. Step 4: Simplify right side
    628,828.76x = 297,103,725,512.81
  5. Step 5: Solve for x
    x = 297,103,725,512.81/628,828.76
  6. Step 6: Final answer
    x = 472,471.59

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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.