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Finding the Fourth Proportional to 398,603,400.80, 598,542,830.40 and 301,668,562.40

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Solution

The fourth proportional to 398,603,400.80, 598,542,830.40 and 301,668,562.40 is: 452,985,485.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,603,400.80 : 598,542,830.40 = 301,668,562.40 : x
  2. Step 2: Convert to fraction form
    398,603,400.80/598,542,830.40 = 301,668,562.40/x
  3. Step 3: Cross multiply
    398,603,400.80x = 598,542,830.40 × 301,668,562.40
  4. Step 4: Simplify right side
    398,603,400.80x = 180,561,555,181,595,008
  5. Step 5: Solve for x
    x = 180,561,555,181,595,008/398,603,400.80
  6. Step 6: Final answer
    x = 452,985,485.87

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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.