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Finding the Fourth Proportional to 628,607.26, 867,496.44 and 342,145.90

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Solution

The fourth proportional to 628,607.26, 867,496.44 and 342,145.90 is: 472,171.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,607.26 : 867,496.44 = 342,145.90 : x
  2. Step 2: Convert to fraction form
    628,607.26/867,496.44 = 342,145.90/x
  3. Step 3: Cross multiply
    628,607.26x = 867,496.44 × 342,145.90
  4. Step 4: Simplify right side
    628,607.26x = 296,810,350,210.60
  5. Step 5: Solve for x
    x = 296,810,350,210.60/628,607.26
  6. Step 6: Final answer
    x = 472,171.37

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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.