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Finding the Fourth Proportional to 624,219.40, 934,745.10 and 343,419.40

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Solution

The fourth proportional to 624,219.40, 934,745.10 and 343,419.40 is: 514,257.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,219.40 : 934,745.10 = 343,419.40 : x
  2. Step 2: Convert to fraction form
    624,219.40/934,745.10 = 343,419.40/x
  3. Step 3: Cross multiply
    624,219.40x = 934,745.10 × 343,419.40
  4. Step 4: Simplify right side
    624,219.40x = 321,009,601,394.94
  5. Step 5: Solve for x
    x = 321,009,601,394.94/624,219.40
  6. Step 6: Final answer
    x = 514,257.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.