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Finding the Fourth Proportional to 679,957,711.20, 1,019,936,566.80 and 220,225,816.80

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Solution

The fourth proportional to 679,957,711.20, 1,019,936,566.80 and 220,225,816.80 is: 330,338,725.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,957,711.20 : 1,019,936,566.80 = 220,225,816.80 : x
  2. Step 2: Convert to fraction form
    679,957,711.20/1,019,936,566.80 = 220,225,816.80/x
  3. Step 3: Cross multiply
    679,957,711.20x = 1,019,936,566.80 × 220,225,816.80
  4. Step 4: Simplify right side
    679,957,711.20x = 224,616,363,507,717,760
  5. Step 5: Solve for x
    x = 224,616,363,507,717,760/679,957,711.20
  6. Step 6: Final answer
    x = 330,338,725.20

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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.