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Finding the Fourth Proportional to 398,606,909.70, 597,910,364.55 and 362,256,345.30

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Solution

The fourth proportional to 398,606,909.70, 597,910,364.55 and 362,256,345.30 is: 543,384,517.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,606,909.70 : 597,910,364.55 = 362,256,345.30 : x
  2. Step 2: Convert to fraction form
    398,606,909.70/597,910,364.55 = 362,256,345.30/x
  3. Step 3: Cross multiply
    398,606,909.70x = 597,910,364.55 × 362,256,345.30
  4. Step 4: Simplify right side
    398,606,909.70x = 216,596,823,478,873,664
  5. Step 5: Solve for x
    x = 216,596,823,478,873,664/398,606,909.70
  6. Step 6: Final answer
    x = 543,384,517.95

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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.