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Finding the Fourth Proportional to 619,531,448.00, 855,015,157.62 and 462,626,149.95

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Solution

The fourth proportional to 619,531,448.00, 855,015,157.62 and 462,626,149.95 is: 638,470,204.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,531,448.00 : 855,015,157.62 = 462,626,149.95 : x
  2. Step 2: Convert to fraction form
    619,531,448.00/855,015,157.62 = 462,626,149.95/x
  3. Step 3: Cross multiply
    619,531,448.00x = 855,015,157.62 × 462,626,149.95
  4. Step 4: Simplify right side
    619,531,448.00x = 395,552,370,518,633,024
  5. Step 5: Solve for x
    x = 395,552,370,518,633,024/619,531,448.00
  6. Step 6: Final answer
    x = 638,470,204.86

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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.