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Finding the Fourth Proportional to 688,737,262.88, 950,448,346.04 and 387,322,485.06

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Solution

The fourth proportional to 688,737,262.88, 950,448,346.04 and 387,322,485.06 is: 534,499,924.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,737,262.88 : 950,448,346.04 = 387,322,485.06 : x
  2. Step 2: Convert to fraction form
    688,737,262.88/950,448,346.04 = 387,322,485.06/x
  3. Step 3: Cross multiply
    688,737,262.88x = 950,448,346.04 × 387,322,485.06
  4. Step 4: Simplify right side
    688,737,262.88x = 368,130,015,307,443,008
  5. Step 5: Solve for x
    x = 368,130,015,307,443,008/688,737,262.88
  6. Step 6: Final answer
    x = 534,499,924.94

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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.