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Finding the Fourth Proportional to 606,332,030.40, 909,923,198.40 and 388,512,079.20

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Solution

The fourth proportional to 606,332,030.40, 909,923,198.40 and 388,512,079.20 is: 583,040,538.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,332,030.40 : 909,923,198.40 = 388,512,079.20 : x
  2. Step 2: Convert to fraction form
    606,332,030.40/909,923,198.40 = 388,512,079.20/x
  3. Step 3: Cross multiply
    606,332,030.40x = 909,923,198.40 × 388,512,079.20
  4. Step 4: Simplify right side
    606,332,030.40x = 353,516,153,722,698,112
  5. Step 5: Solve for x
    x = 353,516,153,722,698,112/606,332,030.40
  6. Step 6: Final answer
    x = 583,040,538.84

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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.