Home / 442,868,402.80-664,302,604.20-319,786,667.20

Finding the Fourth Proportional to 442,868,402.80, 664,302,604.20 and 319,786,667.20

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Solution

The fourth proportional to 442,868,402.80, 664,302,604.20 and 319,786,667.20 is: 479,680,000.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,868,402.80 : 664,302,604.20 = 319,786,667.20 : x
  2. Step 2: Convert to fraction form
    442,868,402.80/664,302,604.20 = 319,786,667.20/x
  3. Step 3: Cross multiply
    442,868,402.80x = 664,302,604.20 × 319,786,667.20
  4. Step 4: Simplify right side
    442,868,402.80x = 212,435,115,809,398,720
  5. Step 5: Solve for x
    x = 212,435,115,809,398,720/442,868,402.80
  6. Step 6: Final answer
    x = 479,680,000.80

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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.