Home / 981,999,660.62-1,473,275,840.26-429,350,621.78

Finding the Fourth Proportional to 981,999,660.62, 1,473,275,840.26 and 429,350,621.78

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Solution

The fourth proportional to 981,999,660.62, 1,473,275,840.26 and 429,350,621.78 is: 644,146,758.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,999,660.62 : 1,473,275,840.26 = 429,350,621.78 : x
  2. Step 2: Convert to fraction form
    981,999,660.62/1,473,275,840.26 = 429,350,621.78/x
  3. Step 3: Cross multiply
    981,999,660.62x = 1,473,275,840.26 × 429,350,621.78
  4. Step 4: Simplify right side
    981,999,660.62x = 632,551,898,069,082,880
  5. Step 5: Solve for x
    x = 632,551,898,069,082,880/981,999,660.62
  6. Step 6: Final answer
    x = 644,146,758.33

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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.