Home / 647,034,005.70-970,551,008.55-402,145,992.90

Finding the Fourth Proportional to 647,034,005.70, 970,551,008.55 and 402,145,992.90

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Solution

The fourth proportional to 647,034,005.70, 970,551,008.55 and 402,145,992.90 is: 603,218,989.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,034,005.70 : 970,551,008.55 = 402,145,992.90 : x
  2. Step 2: Convert to fraction form
    647,034,005.70/970,551,008.55 = 402,145,992.90/x
  3. Step 3: Cross multiply
    647,034,005.70x = 970,551,008.55 × 402,145,992.90
  4. Step 4: Simplify right side
    647,034,005.70x = 390,303,198,993,436,096
  5. Step 5: Solve for x
    x = 390,303,198,993,436,096/647,034,005.70
  6. Step 6: Final answer
    x = 603,218,989.35

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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.