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Finding the Fourth Proportional to 569,911,276.80, 854,866,915.20 and 388,512,748.80

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Solution

The fourth proportional to 569,911,276.80, 854,866,915.20 and 388,512,748.80 is: 582,769,123.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,911,276.80 : 854,866,915.20 = 388,512,748.80 : x
  2. Step 2: Convert to fraction form
    569,911,276.80/854,866,915.20 = 388,512,748.80/x
  3. Step 3: Cross multiply
    569,911,276.80x = 854,866,915.20 × 388,512,748.80
  4. Step 4: Simplify right side
    569,911,276.80x = 332,126,695,082,528,512
  5. Step 5: Solve for x
    x = 332,126,695,082,528,512/569,911,276.80
  6. Step 6: Final answer
    x = 582,769,123.20

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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.