Home / 419,905,145.60-629,857,718.40-392,695,366.40

Finding the Fourth Proportional to 419,905,145.60, 629,857,718.40 and 392,695,366.40

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Solution

The fourth proportional to 419,905,145.60, 629,857,718.40 and 392,695,366.40 is: 589,043,049.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,905,145.60 : 629,857,718.40 = 392,695,366.40 : x
  2. Step 2: Convert to fraction form
    419,905,145.60/629,857,718.40 = 392,695,366.40/x
  3. Step 3: Cross multiply
    419,905,145.60x = 629,857,718.40 × 392,695,366.40
  4. Step 4: Simplify right side
    419,905,145.60x = 247,342,207,506,956,000
  5. Step 5: Solve for x
    x = 247,342,207,506,956,000/419,905,145.60
  6. Step 6: Final answer
    x = 589,043,049.60

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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.