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Finding the Fourth Proportional to 890,356,936.20, 1,335,535,404.30 and 758,346,991.80

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Solution

The fourth proportional to 890,356,936.20, 1,335,535,404.30 and 758,346,991.80 is: 1,137,520,487.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,356,936.20 : 1,335,535,404.30 = 758,346,991.80 : x
  2. Step 2: Convert to fraction form
    890,356,936.20/1,335,535,404.30 = 758,346,991.80/x
  3. Step 3: Cross multiply
    890,356,936.20x = 1,335,535,404.30 × 758,346,991.80
  4. Step 4: Simplify right side
    890,356,936.20x = 1,012,799,256,293,301,632
  5. Step 5: Solve for x
    x = 1,012,799,256,293,301,632/890,356,936.20
  6. Step 6: Final answer
    x = 1,137,520,487.70

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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.