Home / 393,141,863.20-589,712,794.80-134,318,286.40

Finding the Fourth Proportional to 393,141,863.20, 589,712,794.80 and 134,318,286.40

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Solution

The fourth proportional to 393,141,863.20, 589,712,794.80 and 134,318,286.40 is: 201,477,429.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,141,863.20 : 589,712,794.80 = 134,318,286.40 : x
  2. Step 2: Convert to fraction form
    393,141,863.20/589,712,794.80 = 134,318,286.40/x
  3. Step 3: Cross multiply
    393,141,863.20x = 589,712,794.80 × 134,318,286.40
  4. Step 4: Simplify right side
    393,141,863.20x = 79,209,212,065,690,832
  5. Step 5: Solve for x
    x = 79,209,212,065,690,832/393,141,863.20
  6. Step 6: Final answer
    x = 201,477,429.60

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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.