Home / 402,408,815.60-603,613,223.40-279,964,809.20

Finding the Fourth Proportional to 402,408,815.60, 603,613,223.40 and 279,964,809.20

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Solution

The fourth proportional to 402,408,815.60, 603,613,223.40 and 279,964,809.20 is: 419,947,213.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,408,815.60 : 603,613,223.40 = 279,964,809.20 : x
  2. Step 2: Convert to fraction form
    402,408,815.60/603,613,223.40 = 279,964,809.20/x
  3. Step 3: Cross multiply
    402,408,815.60x = 603,613,223.40 × 279,964,809.20
  4. Step 4: Simplify right side
    402,408,815.60x = 168,990,460,919,777,952
  5. Step 5: Solve for x
    x = 168,990,460,919,777,952/402,408,815.60
  6. Step 6: Final answer
    x = 419,947,213.80

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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.