Home / 645,905.20-967,108.20-505,937.20

Finding the Fourth Proportional to 645,905.20, 967,108.20 and 505,937.20

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Solution

The fourth proportional to 645,905.20, 967,108.20 and 505,937.20 is: 757,535.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,905.20 : 967,108.20 = 505,937.20 : x
  2. Step 2: Convert to fraction form
    645,905.20/967,108.20 = 505,937.20/x
  3. Step 3: Cross multiply
    645,905.20x = 967,108.20 × 505,937.20
  4. Step 4: Simplify right side
    645,905.20x = 489,296,014,805.04
  5. Step 5: Solve for x
    x = 489,296,014,805.04/645,905.20
  6. Step 6: Final answer
    x = 757,535.34

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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.