Home / 645,115,405.12-967,670,337.20-178,775,490.40

Finding the Fourth Proportional to 645,115,405.12, 967,670,337.20 and 178,775,490.40

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Solution

The fourth proportional to 645,115,405.12, 967,670,337.20 and 178,775,490.40 is: 268,162,467.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,115,405.12 : 967,670,337.20 = 178,775,490.40 : x
  2. Step 2: Convert to fraction form
    645,115,405.12/967,670,337.20 = 178,775,490.40/x
  3. Step 3: Cross multiply
    645,115,405.12x = 967,670,337.20 × 178,775,490.40
  4. Step 4: Simplify right side
    645,115,405.12x = 172,995,739,078,463,392
  5. Step 5: Solve for x
    x = 172,995,739,078,463,392/645,115,405.12
  6. Step 6: Final answer
    x = 268,162,467.84

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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.