Home / 645,416.20-967,994.70-308,456.20

Finding the Fourth Proportional to 645,416.20, 967,994.70 and 308,456.20

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Solution

The fourth proportional to 645,416.20, 967,994.70 and 308,456.20 is: 462,622.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,416.20 : 967,994.70 = 308,456.20 : x
  2. Step 2: Convert to fraction form
    645,416.20/967,994.70 = 308,456.20/x
  3. Step 3: Cross multiply
    645,416.20x = 967,994.70 × 308,456.20
  4. Step 4: Simplify right side
    645,416.20x = 298,583,966,782.14
  5. Step 5: Solve for x
    x = 298,583,966,782.14/645,416.20
  6. Step 6: Final answer
    x = 462,622.36

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Double scale
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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.