Home / 665,248,016.40-996,360,370.20-420,360,003.60

Finding the Fourth Proportional to 665,248,016.40, 996,360,370.20 and 420,360,003.60

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Solution

The fourth proportional to 665,248,016.40, 996,360,370.20 and 420,360,003.60 is: 629,584,814.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,248,016.40 : 996,360,370.20 = 420,360,003.60 : x
  2. Step 2: Convert to fraction form
    665,248,016.40/996,360,370.20 = 420,360,003.60/x
  3. Step 3: Cross multiply
    665,248,016.40x = 996,360,370.20 × 420,360,003.60
  4. Step 4: Simplify right side
    665,248,016.40x = 418,830,048,804,169,408
  5. Step 5: Solve for x
    x = 418,830,048,804,169,408/665,248,016.40
  6. Step 6: Final answer
    x = 629,584,814.20

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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.