Home / 647,639.30-971,531.85-198,356.60

Finding the Fourth Proportional to 647,639.30, 971,531.85 and 198,356.60

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Solution

The fourth proportional to 647,639.30, 971,531.85 and 198,356.60 is: 297,557.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,639.30 : 971,531.85 = 198,356.60 : x
  2. Step 2: Convert to fraction form
    647,639.30/971,531.85 = 198,356.60/x
  3. Step 3: Cross multiply
    647,639.30x = 971,531.85 × 198,356.60
  4. Step 4: Simplify right side
    647,639.30x = 192,709,754,557.71
  5. Step 5: Solve for x
    x = 192,709,754,557.71/647,639.30
  6. Step 6: Final answer
    x = 297,557.23

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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.