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Finding the Fourth Proportional to 1,123,728,750.62, 1,682,234,797.88 and 679,727,745.26

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Solution

The fourth proportional to 1,123,728,750.62, 1,682,234,797.88 and 679,727,745.26 is: 1,017,560,212.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,728,750.62 : 1,682,234,797.88 = 679,727,745.26 : x
  2. Step 2: Convert to fraction form
    1,123,728,750.62/1,682,234,797.88 = 679,727,745.26/x
  3. Step 3: Cross multiply
    1,123,728,750.62x = 1,682,234,797.88 × 679,727,745.26
  4. Step 4: Simplify right side
    1,123,728,750.62x = 1,143,461,666,160,884,352
  5. Step 5: Solve for x
    x = 1,143,461,666,160,884,352/1,123,728,750.62
  6. Step 6: Final answer
    x = 1,017,560,212.40

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1.5x scale

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.