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Finding the Fourth Proportional to 490,681,978.80, 735,397,777.80 and 260,761,210.80

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Solution

The fourth proportional to 490,681,978.80, 735,397,777.80 and 260,761,210.80 is: 390,809,573.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,681,978.80 : 735,397,777.80 = 260,761,210.80 : x
  2. Step 2: Convert to fraction form
    490,681,978.80/735,397,777.80 = 260,761,210.80/x
  3. Step 3: Cross multiply
    490,681,978.80x = 735,397,777.80 × 260,761,210.80
  4. Step 4: Simplify right side
    490,681,978.80x = 191,763,214,958,757,344
  5. Step 5: Solve for x
    x = 191,763,214,958,757,344/490,681,978.80
  6. Step 6: Final answer
    x = 390,809,573.70

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Why These Related Problems?

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