Home / 489,312,803.60-733,969,205.40-198,319,331.60

Finding the Fourth Proportional to 489,312,803.60, 733,969,205.40 and 198,319,331.60

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Solution

The fourth proportional to 489,312,803.60, 733,969,205.40 and 198,319,331.60 is: 297,478,997.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,312,803.60 : 733,969,205.40 = 198,319,331.60 : x
  2. Step 2: Convert to fraction form
    489,312,803.60/733,969,205.40 = 198,319,331.60/x
  3. Step 3: Cross multiply
    489,312,803.60x = 733,969,205.40 × 198,319,331.60
  4. Step 4: Simplify right side
    489,312,803.60x = 145,560,282,229,911,104
  5. Step 5: Solve for x
    x = 145,560,282,229,911,104/489,312,803.60
  6. Step 6: Final answer
    x = 297,478,997.40

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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.