Home / 665,248,246.40-996,360,715.20-420,360,233.60

Finding the Fourth Proportional to 665,248,246.40, 996,360,715.20 and 420,360,233.60

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Solution

The fourth proportional to 665,248,246.40, 996,360,715.20 and 420,360,233.60 is: 629,585,159.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,248,246.40 : 996,360,715.20 = 420,360,233.60 : x
  2. Step 2: Convert to fraction form
    665,248,246.40/996,360,715.20 = 420,360,233.60/x
  3. Step 3: Cross multiply
    665,248,246.40x = 996,360,715.20 × 420,360,233.60
  4. Step 4: Simplify right side
    665,248,246.40x = 418,830,422,991,335,104
  5. Step 5: Solve for x
    x = 418,830,422,991,335,104/665,248,246.40
  6. Step 6: Final answer
    x = 629,585,159.01

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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.