Home / 402,408,005.70-603,612,008.55-279,963,999.30

Finding the Fourth Proportional to 402,408,005.70, 603,612,008.55 and 279,963,999.30

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Solution

The fourth proportional to 402,408,005.70, 603,612,008.55 and 279,963,999.30 is: 419,945,998.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,408,005.70 : 603,612,008.55 = 279,963,999.30 : x
  2. Step 2: Convert to fraction form
    402,408,005.70/603,612,008.55 = 279,963,999.30/x
  3. Step 3: Cross multiply
    402,408,005.70x = 603,612,008.55 × 279,963,999.30
  4. Step 4: Simplify right side
    402,408,005.70x = 168,989,631,939,163,776
  5. Step 5: Solve for x
    x = 168,989,631,939,163,776/402,408,005.70
  6. Step 6: Final answer
    x = 419,945,998.95

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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.