Home / 628,928.84-867,910.56-342,443.72

Finding the Fourth Proportional to 628,928.84, 867,910.56 and 342,443.72

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Solution

The fourth proportional to 628,928.84, 867,910.56 and 342,443.72 is: 472,566.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,928.84 : 867,910.56 = 342,443.72 : x
  2. Step 2: Convert to fraction form
    628,928.84/867,910.56 = 342,443.72/x
  3. Step 3: Cross multiply
    628,928.84x = 867,910.56 × 342,443.72
  4. Step 4: Simplify right side
    628,928.84x = 297,210,520,793.68
  5. Step 5: Solve for x
    x = 297,210,520,793.68/628,928.84
  6. Step 6: Final answer
    x = 472,566.21

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Double scale
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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.