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Finding the Fourth Proportional to 579,871,651.60, 800,222,997.60 and 319,111,267.60

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Solution

The fourth proportional to 579,871,651.60, 800,222,997.60 and 319,111,267.60 is: 440,373,614.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,871,651.60 : 800,222,997.60 = 319,111,267.60 : x
  2. Step 2: Convert to fraction form
    579,871,651.60/800,222,997.60 = 319,111,267.60/x
  3. Step 3: Cross multiply
    579,871,651.60x = 800,222,997.60 × 319,111,267.60
  4. Step 4: Simplify right side
    579,871,651.60x = 255,360,175,126,807,776
  5. Step 5: Solve for x
    x = 255,360,175,126,807,776/579,871,651.60
  6. Step 6: Final answer
    x = 440,373,614.44

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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.