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Finding the Fourth Proportional to 1,158,978,376.80, 1,738,467,565.20 and 382,743,842.40

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Solution

The fourth proportional to 1,158,978,376.80, 1,738,467,565.20 and 382,743,842.40 is: 574,115,763.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,158,978,376.80 : 1,738,467,565.20 = 382,743,842.40 : x
  2. Step 2: Convert to fraction form
    1,158,978,376.80/1,738,467,565.20 = 382,743,842.40/x
  3. Step 3: Cross multiply
    1,158,978,376.80x = 1,738,467,565.20 × 382,743,842.40
  4. Step 4: Simplify right side
    1,158,978,376.80x = 665,387,755,792,420,480
  5. Step 5: Solve for x
    x = 665,387,755,792,420,480/1,158,978,376.80
  6. Step 6: Final answer
    x = 574,115,763.60

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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.