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Finding the Fourth Proportional to 398,606,943.70, 597,910,415.55 and 362,256,379.30

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Solution

The fourth proportional to 398,606,943.70, 597,910,415.55 and 362,256,379.30 is: 543,384,568.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,606,943.70 : 597,910,415.55 = 362,256,379.30 : x
  2. Step 2: Convert to fraction form
    398,606,943.70/597,910,415.55 = 362,256,379.30/x
  3. Step 3: Cross multiply
    398,606,943.70x = 597,910,415.55 × 362,256,379.30
  4. Step 4: Simplify right side
    398,606,943.70x = 216,596,862,282,901,408
  5. Step 5: Solve for x
    x = 216,596,862,282,901,408/398,606,943.70
  6. Step 6: Final answer
    x = 543,384,568.95

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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.