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Finding the Fourth Proportional to 398,603,148.80, 597,904,723.20 and 333,979,923.20

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Solution

The fourth proportional to 398,603,148.80, 597,904,723.20 and 333,979,923.20 is: 500,969,884.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,603,148.80 : 597,904,723.20 = 333,979,923.20 : x
  2. Step 2: Convert to fraction form
    398,603,148.80/597,904,723.20 = 333,979,923.20/x
  3. Step 3: Cross multiply
    398,603,148.80x = 597,904,723.20 × 333,979,923.20
  4. Step 4: Simplify right side
    398,603,148.80x = 199,688,173,535,253,280
  5. Step 5: Solve for x
    x = 199,688,173,535,253,280/398,603,148.80
  6. Step 6: Final answer
    x = 500,969,884.80

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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.