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Finding the Fourth Proportional to 385,958,543.20, 541,775,232.80 and 385,958,543.20

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Solution

The fourth proportional to 385,958,543.20, 541,775,232.80 and 385,958,543.20 is: 541,775,232.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,958,543.20 : 541,775,232.80 = 385,958,543.20 : x
  2. Step 2: Convert to fraction form
    385,958,543.20/541,775,232.80 = 385,958,543.20/x
  3. Step 3: Cross multiply
    385,958,543.20x = 541,775,232.80 × 385,958,543.20
  4. Step 4: Simplify right side
    385,958,543.20x = 209,102,779,593,328,832
  5. Step 5: Solve for x
    x = 209,102,779,593,328,832/385,958,543.20
  6. Step 6: Final answer
    x = 541,775,232.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.