Home / 665,248,015.40-996,360,368.70-420,360,002.60

Finding the Fourth Proportional to 665,248,015.40, 996,360,368.70 and 420,360,002.60

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Solution

The fourth proportional to 665,248,015.40, 996,360,368.70 and 420,360,002.60 is: 629,584,812.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,248,015.40 : 996,360,368.70 = 420,360,002.60 : x
  2. Step 2: Convert to fraction form
    665,248,015.40/996,360,368.70 = 420,360,002.60/x
  3. Step 3: Cross multiply
    665,248,015.40x = 996,360,368.70 × 420,360,002.60
  4. Step 4: Simplify right side
    665,248,015.40x = 418,830,047,177,268,992
  5. Step 5: Solve for x
    x = 418,830,047,177,268,992/665,248,015.40
  6. Step 6: Final answer
    x = 629,584,812.70

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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.