Home / 402,408,010.80-603,612,016.20-279,964,004.40

Finding the Fourth Proportional to 402,408,010.80, 603,612,016.20 and 279,964,004.40

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Solution

The fourth proportional to 402,408,010.80, 603,612,016.20 and 279,964,004.40 is: 419,946,006.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,408,010.80 : 603,612,016.20 = 279,964,004.40 : x
  2. Step 2: Convert to fraction form
    402,408,010.80/603,612,016.20 = 279,964,004.40/x
  3. Step 3: Cross multiply
    402,408,010.80x = 603,612,016.20 × 279,964,004.40
  4. Step 4: Simplify right side
    402,408,010.80x = 168,989,637,159,309,664
  5. Step 5: Solve for x
    x = 168,989,637,159,309,664/402,408,010.80
  6. Step 6: Final answer
    x = 419,946,006.60

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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.