Home / 489,312,807.60-733,969,211.40-198,319,335.60

Finding the Fourth Proportional to 489,312,807.60, 733,969,211.40 and 198,319,335.60

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Solution

The fourth proportional to 489,312,807.60, 733,969,211.40 and 198,319,335.60 is: 297,479,003.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,312,807.60 : 733,969,211.40 = 198,319,335.60 : x
  2. Step 2: Convert to fraction form
    489,312,807.60/733,969,211.40 = 198,319,335.60/x
  3. Step 3: Cross multiply
    489,312,807.60x = 733,969,211.40 × 198,319,335.60
  4. Step 4: Simplify right side
    489,312,807.60x = 145,560,286,355,703,936
  5. Step 5: Solve for x
    x = 145,560,286,355,703,936/489,312,807.60
  6. Step 6: Final answer
    x = 297,479,003.40

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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.