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Finding the Fourth Proportional to 645,903.20, 967,105.20 and 505,935.20

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Solution

The fourth proportional to 645,903.20, 967,105.20 and 505,935.20 is: 757,532.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,903.20 : 967,105.20 = 505,935.20 : x
  2. Step 2: Convert to fraction form
    645,903.20/967,105.20 = 505,935.20/x
  3. Step 3: Cross multiply
    645,903.20x = 967,105.20 × 505,935.20
  4. Step 4: Simplify right side
    645,903.20x = 489,292,562,783.04
  5. Step 5: Solve for x
    x = 489,292,562,783.04/645,903.20
  6. Step 6: Final answer
    x = 757,532.34

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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.