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Finding the Fourth Proportional to 855,237,978.90, 1,180,228,410.99 and 464,097,402.90

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Solution

The fourth proportional to 855,237,978.90, 1,180,228,410.99 and 464,097,402.90 is: 640,454,416.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,237,978.90 : 1,180,228,410.99 = 464,097,402.90 : x
  2. Step 2: Convert to fraction form
    855,237,978.90/1,180,228,410.99 = 464,097,402.90/x
  3. Step 3: Cross multiply
    855,237,978.90x = 1,180,228,410.99 × 464,097,402.90
  4. Step 4: Simplify right side
    855,237,978.90x = 547,740,940,369,252,800
  5. Step 5: Solve for x
    x = 547,740,940,369,252,800/855,237,978.90
  6. Step 6: Final answer
    x = 640,454,416.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.