Home / 426,072,708.70-639,109,063.05-153,408,046.30

Finding the Fourth Proportional to 426,072,708.70, 639,109,063.05 and 153,408,046.30

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Solution

The fourth proportional to 426,072,708.70, 639,109,063.05 and 153,408,046.30 is: 230,112,069.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,072,708.70 : 639,109,063.05 = 153,408,046.30 : x
  2. Step 2: Convert to fraction form
    426,072,708.70/639,109,063.05 = 153,408,046.30/x
  3. Step 3: Cross multiply
    426,072,708.70x = 639,109,063.05 × 153,408,046.30
  4. Step 4: Simplify right side
    426,072,708.70x = 98,044,472,735,124,016
  5. Step 5: Solve for x
    x = 98,044,472,735,124,016/426,072,708.70
  6. Step 6: Final answer
    x = 230,112,069.45

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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.