Home / 490,752,003.60-736,128,005.40-145,758,877.20

Finding the Fourth Proportional to 490,752,003.60, 736,128,005.40 and 145,758,877.20

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Solution

The fourth proportional to 490,752,003.60, 736,128,005.40 and 145,758,877.20 is: 218,638,315.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,752,003.60 : 736,128,005.40 = 145,758,877.20 : x
  2. Step 2: Convert to fraction form
    490,752,003.60/736,128,005.40 = 145,758,877.20/x
  3. Step 3: Cross multiply
    490,752,003.60x = 736,128,005.40 × 145,758,877.20
  4. Step 4: Simplify right side
    490,752,003.60x = 107,297,191,542,579,520
  5. Step 5: Solve for x
    x = 107,297,191,542,579,520/490,752,003.60
  6. Step 6: Final answer
    x = 218,638,315.80

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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.