Home / 420,524,803.20-630,675,230.40-129,391,363.20

Finding the Fourth Proportional to 420,524,803.20, 630,675,230.40 and 129,391,363.20

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Solution

The fourth proportional to 420,524,803.20, 630,675,230.40 and 129,391,363.20 is: 194,052,591.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,524,803.20 : 630,675,230.40 = 129,391,363.20 : x
  2. Step 2: Convert to fraction form
    420,524,803.20/630,675,230.40 = 129,391,363.20/x
  3. Step 3: Cross multiply
    420,524,803.20x = 630,675,230.40 × 129,391,363.20
  4. Step 4: Simplify right side
    420,524,803.20x = 81,603,927,797,930,080
  5. Step 5: Solve for x
    x = 81,603,927,797,930,080/420,524,803.20
  6. Step 6: Final answer
    x = 194,052,591.37

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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.