Home / 647,849.34-971,960.76-198,636.48

Finding the Fourth Proportional to 647,849.34, 971,960.76 and 198,636.48

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Solution

The fourth proportional to 647,849.34, 971,960.76 and 198,636.48 is: 298,011.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,849.34 : 971,960.76 = 198,636.48 : x
  2. Step 2: Convert to fraction form
    647,849.34/971,960.76 = 198,636.48/x
  3. Step 3: Cross multiply
    647,849.34x = 971,960.76 × 198,636.48
  4. Step 4: Simplify right side
    647,849.34x = 193,066,864,064.53
  5. Step 5: Solve for x
    x = 193,066,864,064.53/647,849.34
  6. Step 6: Final answer
    x = 298,011.98

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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.