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Finding the Fourth Proportional to 536,628.40, 804,942.60 and 387,912.40

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Solution

The fourth proportional to 536,628.40, 804,942.60 and 387,912.40 is: 581,868.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,628.40 : 804,942.60 = 387,912.40 : x
  2. Step 2: Convert to fraction form
    536,628.40/804,942.60 = 387,912.40/x
  3. Step 3: Cross multiply
    536,628.40x = 804,942.60 × 387,912.40
  4. Step 4: Simplify right side
    536,628.40x = 312,247,215,828.24
  5. Step 5: Solve for x
    x = 312,247,215,828.24/536,628.40
  6. Step 6: Final answer
    x = 581,868.60

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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.