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Finding the Fourth Proportional to 383,579,672.80, 575,425,496.40 and 124,750,847.20

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Solution

The fourth proportional to 383,579,672.80, 575,425,496.40 and 124,750,847.20 is: 187,144,479.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,579,672.80 : 575,425,496.40 = 124,750,847.20 : x
  2. Step 2: Convert to fraction form
    383,579,672.80/575,425,496.40 = 124,750,847.20/x
  3. Step 3: Cross multiply
    383,579,672.80x = 575,425,496.40 × 124,750,847.20
  4. Step 4: Simplify right side
    383,579,672.80x = 71,784,818,176,380,552
  5. Step 5: Solve for x
    x = 71,784,818,176,380,552/383,579,672.80
  6. Step 6: Final answer
    x = 187,144,479.40

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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.