Home / 402,014,145.15-603,021,217.73-129,384,912.15

Finding the Fourth Proportional to 402,014,145.15, 603,021,217.73 and 129,384,912.15

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Solution

The fourth proportional to 402,014,145.15, 603,021,217.73 and 129,384,912.15 is: 194,077,368.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,014,145.15 : 603,021,217.73 = 129,384,912.15 : x
  2. Step 2: Convert to fraction form
    402,014,145.15/603,021,217.73 = 129,384,912.15/x
  3. Step 3: Cross multiply
    402,014,145.15x = 603,021,217.73 × 129,384,912.15
  4. Step 4: Simplify right side
    402,014,145.15x = 78,021,847,279,935,152
  5. Step 5: Solve for x
    x = 78,021,847,279,935,152/402,014,145.15
  6. Step 6: Final answer
    x = 194,077,368.23

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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.