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Finding the Fourth Proportional to 628,794.03, 867,708.54 and 342,315.12

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Solution

The fourth proportional to 628,794.03, 867,708.54 and 342,315.12 is: 472,380.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,794.03 : 867,708.54 = 342,315.12 : x
  2. Step 2: Convert to fraction form
    628,794.03/867,708.54 = 342,315.12/x
  3. Step 3: Cross multiply
    628,794.03x = 867,708.54 × 342,315.12
  4. Step 4: Simplify right side
    628,794.03x = 297,029,752,995.13
  5. Step 5: Solve for x
    x = 297,029,752,995.13/628,794.03
  6. Step 6: Final answer
    x = 472,380.05

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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.