Home / 738,145,812.90-1,107,218,719.35-431,279,969.70

Finding the Fourth Proportional to 738,145,812.90, 1,107,218,719.35 and 431,279,969.70

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Solution

The fourth proportional to 738,145,812.90, 1,107,218,719.35 and 431,279,969.70 is: 646,919,954.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,145,812.90 : 1,107,218,719.35 = 431,279,969.70 : x
  2. Step 2: Convert to fraction form
    738,145,812.90/1,107,218,719.35 = 431,279,969.70/x
  3. Step 3: Cross multiply
    738,145,812.90x = 1,107,218,719.35 × 431,279,969.70
  4. Step 4: Simplify right side
    738,145,812.90x = 477,521,255,732,540,736
  5. Step 5: Solve for x
    x = 477,521,255,732,540,736/738,145,812.90
  6. Step 6: Final answer
    x = 646,919,954.55

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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.