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Finding the Fourth Proportional to 628,607.34, 867,496.52 and 342,145.98

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Solution

The fourth proportional to 628,607.34, 867,496.52 and 342,145.98 is: 472,171.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,607.34 : 867,496.52 = 342,145.98 : x
  2. Step 2: Convert to fraction form
    628,607.34/867,496.52 = 342,145.98/x
  3. Step 3: Cross multiply
    628,607.34x = 867,496.52 × 342,145.98
  4. Step 4: Simplify right side
    628,607.34x = 296,810,447,837.36
  5. Step 5: Solve for x
    x = 296,810,447,837.36/628,607.34
  6. Step 6: Final answer
    x = 472,171.46

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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.