Home / 402,408,006.70-603,612,010.05-279,964,000.30

Finding the Fourth Proportional to 402,408,006.70, 603,612,010.05 and 279,964,000.30

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Solution

The fourth proportional to 402,408,006.70, 603,612,010.05 and 279,964,000.30 is: 419,946,000.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,408,006.70 : 603,612,010.05 = 279,964,000.30 : x
  2. Step 2: Convert to fraction form
    402,408,006.70/603,612,010.05 = 279,964,000.30/x
  3. Step 3: Cross multiply
    402,408,006.70x = 603,612,010.05 × 279,964,000.30
  4. Step 4: Simplify right side
    402,408,006.70x = 168,989,632,962,721,792
  5. Step 5: Solve for x
    x = 168,989,632,962,721,792/402,408,006.70
  6. Step 6: Final answer
    x = 419,946,000.45

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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.