Home / 426,072,714.70-639,109,072.05-153,408,052.30

Finding the Fourth Proportional to 426,072,714.70, 639,109,072.05 and 153,408,052.30

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Solution

The fourth proportional to 426,072,714.70, 639,109,072.05 and 153,408,052.30 is: 230,112,078.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,072,714.70 : 639,109,072.05 = 153,408,052.30 : x
  2. Step 2: Convert to fraction form
    426,072,714.70/639,109,072.05 = 153,408,052.30/x
  3. Step 3: Cross multiply
    426,072,714.70x = 639,109,072.05 × 153,408,052.30
  4. Step 4: Simplify right side
    426,072,714.70x = 98,044,477,950,450,864
  5. Step 5: Solve for x
    x = 98,044,477,950,450,864/426,072,714.70
  6. Step 6: Final answer
    x = 230,112,078.45

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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.