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Finding the Fourth Proportional to 998,570,446.40, 1,494,936,040.80 and 711,915,982.40

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Solution

The fourth proportional to 998,570,446.40, 1,494,936,040.80 and 711,915,982.40 is: 1,065,792,467.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,570,446.40 : 1,494,936,040.80 = 711,915,982.40 : x
  2. Step 2: Convert to fraction form
    998,570,446.40/1,494,936,040.80 = 711,915,982.40/x
  3. Step 3: Cross multiply
    998,570,446.40x = 1,494,936,040.80 × 711,915,982.40
  4. Step 4: Simplify right side
    998,570,446.40x = 1,064,268,860,111,298,432
  5. Step 5: Solve for x
    x = 1,064,268,860,111,298,432/998,570,446.40
  6. Step 6: Final answer
    x = 1,065,792,467.57

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1.5x scale

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.