Home / 628,555.25-867,389.61-342,069.20

Finding the Fourth Proportional to 628,555.25, 867,389.61 and 342,069.20

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Solution

The fourth proportional to 628,555.25, 867,389.61 and 342,069.20 is: 472,046.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,555.25 : 867,389.61 = 342,069.20 : x
  2. Step 2: Convert to fraction form
    628,555.25/867,389.61 = 342,069.20/x
  3. Step 3: Cross multiply
    628,555.25x = 867,389.61 × 342,069.20
  4. Step 4: Simplify right side
    628,555.25x = 296,707,269,981.01
  5. Step 5: Solve for x
    x = 296,707,269,981.01/628,555.25
  6. Step 6: Final answer
    x = 472,046.44

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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.