Home / 918,962,318.21-1,268,176,092.77-501,276,461.09

Finding the Fourth Proportional to 918,962,318.21, 1,268,176,092.77 and 501,276,461.09

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Solution

The fourth proportional to 918,962,318.21, 1,268,176,092.77 and 501,276,461.09 is: 691,765,931.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,962,318.21 : 1,268,176,092.77 = 501,276,461.09 : x
  2. Step 2: Convert to fraction form
    918,962,318.21/1,268,176,092.77 = 501,276,461.09/x
  3. Step 3: Cross multiply
    918,962,318.21x = 1,268,176,092.77 × 501,276,461.09
  4. Step 4: Simplify right side
    918,962,318.21x = 635,706,823,817,601,408
  5. Step 5: Solve for x
    x = 635,706,823,817,601,408/918,962,318.21
  6. Step 6: Final answer
    x = 691,765,931.23

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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.