Home / 628,634.53-867,515.75-342,156.70

Finding the Fourth Proportional to 628,634.53, 867,515.75 and 342,156.70

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Solution

The fourth proportional to 628,634.53, 867,515.75 and 342,156.70 is: 472,176.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,634.53 : 867,515.75 = 342,156.70 : x
  2. Step 2: Convert to fraction form
    628,634.53/867,515.75 = 342,156.70/x
  3. Step 3: Cross multiply
    628,634.53x = 867,515.75 × 342,156.70
  4. Step 4: Simplify right side
    628,634.53x = 296,826,326,218.03
  5. Step 5: Solve for x
    x = 296,826,326,218.03/628,634.53
  6. Step 6: Final answer
    x = 472,176.30

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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.