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Finding the Fourth Proportional to 490,680,812.80, 735,396,028.80 and 260,760,044.80

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Solution

The fourth proportional to 490,680,812.80, 735,396,028.80 and 260,760,044.80 is: 390,807,825.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,680,812.80 : 735,396,028.80 = 260,760,044.80 : x
  2. Step 2: Convert to fraction form
    490,680,812.80/735,396,028.80 = 260,760,044.80/x
  3. Step 3: Cross multiply
    490,680,812.80x = 735,396,028.80 × 260,760,044.80
  4. Step 4: Simplify right side
    490,680,812.80x = 191,761,901,415,630,080
  5. Step 5: Solve for x
    x = 191,761,901,415,630,080/490,680,812.80
  6. Step 6: Final answer
    x = 390,807,825.40

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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.