Home / 981,999,661.62-1,473,275,841.76-429,350,622.78

Finding the Fourth Proportional to 981,999,661.62, 1,473,275,841.76 and 429,350,622.78

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Solution

The fourth proportional to 981,999,661.62, 1,473,275,841.76 and 429,350,622.78 is: 644,146,759.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,999,661.62 : 1,473,275,841.76 = 429,350,622.78 : x
  2. Step 2: Convert to fraction form
    981,999,661.62/1,473,275,841.76 = 429,350,622.78/x
  3. Step 3: Cross multiply
    981,999,661.62x = 1,473,275,841.76 × 429,350,622.78
  4. Step 4: Simplify right side
    981,999,661.62x = 632,551,900,186,384,640
  5. Step 5: Solve for x
    x = 632,551,900,186,384,640/981,999,661.62
  6. Step 6: Final answer
    x = 644,146,759.83

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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.