Home / 628,778.50-867,712.89-342,300.58

Finding the Fourth Proportional to 628,778.50, 867,712.89 and 342,300.58

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Solution

The fourth proportional to 628,778.50, 867,712.89 and 342,300.58 is: 472,374.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,778.50 : 867,712.89 = 342,300.58 : x
  2. Step 2: Convert to fraction form
    628,778.50/867,712.89 = 342,300.58/x
  3. Step 3: Cross multiply
    628,778.50x = 867,712.89 × 342,300.58
  4. Step 4: Simplify right side
    628,778.50x = 297,018,625,520.48
  5. Step 5: Solve for x
    x = 297,018,625,520.48/628,778.50
  6. Step 6: Final answer
    x = 472,374.02

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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.