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Finding the Fourth Proportional to 629,857,390.40, 944,786,085.60 and 370,939,335.20

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Solution

The fourth proportional to 629,857,390.40, 944,786,085.60 and 370,939,335.20 is: 556,409,002.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,857,390.40 : 944,786,085.60 = 370,939,335.20 : x
  2. Step 2: Convert to fraction form
    629,857,390.40/944,786,085.60 = 370,939,335.20/x
  3. Step 3: Cross multiply
    629,857,390.40x = 944,786,085.60 × 370,939,335.20
  4. Step 4: Simplify right side
    629,857,390.40x = 350,458,322,498,674,304
  5. Step 5: Solve for x
    x = 350,458,322,498,674,304/629,857,390.40
  6. Step 6: Final answer
    x = 556,409,002.80

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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.