Home / 647,746.47-971,759.12-198,498.38

Finding the Fourth Proportional to 647,746.47, 971,759.12 and 198,498.38

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Solution

The fourth proportional to 647,746.47, 971,759.12 and 198,498.38 is: 297,790.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,746.47 : 971,759.12 = 198,498.38 : x
  2. Step 2: Convert to fraction form
    647,746.47/971,759.12 = 198,498.38/x
  3. Step 3: Cross multiply
    647,746.47x = 971,759.12 × 198,498.38
  4. Step 4: Simplify right side
    647,746.47x = 192,892,605,218.94
  5. Step 5: Solve for x
    x = 192,892,605,218.94/647,746.47
  6. Step 6: Final answer
    x = 297,790.28

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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.