Home / 407,913,253.16-611,869,115.04-127,815,611.88

Finding the Fourth Proportional to 407,913,253.16, 611,869,115.04 and 127,815,611.88

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Solution

The fourth proportional to 407,913,253.16, 611,869,115.04 and 127,815,611.88 is: 191,723,178.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,913,253.16 : 611,869,115.04 = 127,815,611.88 : x
  2. Step 2: Convert to fraction form
    407,913,253.16/611,869,115.04 = 127,815,611.88/x
  3. Step 3: Cross multiply
    407,913,253.16x = 611,869,115.04 × 127,815,611.88
  4. Step 4: Simplify right side
    407,913,253.16x = 78,206,425,329,311,696
  5. Step 5: Solve for x
    x = 78,206,425,329,311,696/407,913,253.16
  6. Step 6: Final answer
    x = 191,723,178.21

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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.