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Finding the Fourth Proportional to 719,373,643.29, 992,759,692.91 and 440,861,380.29

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Solution

The fourth proportional to 719,373,643.29, 992,759,692.91 and 440,861,380.29 is: 608,403,452.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,373,643.29 : 992,759,692.91 = 440,861,380.29 : x
  2. Step 2: Convert to fraction form
    719,373,643.29/992,759,692.91 = 440,861,380.29/x
  3. Step 3: Cross multiply
    719,373,643.29x = 992,759,692.91 × 440,861,380.29
  4. Step 4: Simplify right side
    719,373,643.29x = 437,669,408,510,374,848
  5. Step 5: Solve for x
    x = 437,669,408,510,374,848/719,373,643.29
  6. Step 6: Final answer
    x = 608,403,452.91

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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.