Home / 658,418,801.60-987,250,288.80-198,287,998.40

Finding the Fourth Proportional to 658,418,801.60, 987,250,288.80 and 198,287,998.40

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Solution

The fourth proportional to 658,418,801.60, 987,250,288.80 and 198,287,998.40 is: 297,318,185.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,418,801.60 : 987,250,288.80 = 198,287,998.40 : x
  2. Step 2: Convert to fraction form
    658,418,801.60/987,250,288.80 = 198,287,998.40/x
  3. Step 3: Cross multiply
    658,418,801.60x = 987,250,288.80 × 198,287,998.40
  4. Step 4: Simplify right side
    658,418,801.60x = 195,759,883,685,973,920
  5. Step 5: Solve for x
    x = 195,759,883,685,973,920/658,418,801.60
  6. Step 6: Final answer
    x = 297,318,185.95

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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.