Home / 643,566,520.10-965,349,780.15-212,745,016.10

Finding the Fourth Proportional to 643,566,520.10, 965,349,780.15 and 212,745,016.10

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Solution

The fourth proportional to 643,566,520.10, 965,349,780.15 and 212,745,016.10 is: 319,117,524.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,566,520.10 : 965,349,780.15 = 212,745,016.10 : x
  2. Step 2: Convert to fraction form
    643,566,520.10/965,349,780.15 = 212,745,016.10/x
  3. Step 3: Cross multiply
    643,566,520.10x = 965,349,780.15 × 212,745,016.10
  4. Step 4: Simplify right side
    643,566,520.10x = 205,373,354,520,143,200
  5. Step 5: Solve for x
    x = 205,373,354,520,143,200/643,566,520.10
  6. Step 6: Final answer
    x = 319,117,524.15

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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.