Home / 821,960,616.78-1,232,940,901.34-379,172,289.72

Finding the Fourth Proportional to 821,960,616.78, 1,232,940,901.34 and 379,172,289.72

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Solution

The fourth proportional to 821,960,616.78, 1,232,940,901.34 and 379,172,289.72 is: 568,758,423.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,960,616.78 : 1,232,940,901.34 = 379,172,289.72 : x
  2. Step 2: Convert to fraction form
    821,960,616.78/1,232,940,901.34 = 379,172,289.72/x
  3. Step 3: Cross multiply
    821,960,616.78x = 1,232,940,901.34 × 379,172,289.72
  4. Step 4: Simplify right side
    821,960,616.78x = 467,497,024,650,528,448
  5. Step 5: Solve for x
    x = 467,497,024,650,528,448/821,960,616.78
  6. Step 6: Final answer
    x = 568,758,423.59

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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.