Home / 668,900,128.80-923,096,799.36-367,489,324.56

Finding the Fourth Proportional to 668,900,128.80, 923,096,799.36 and 367,489,324.56

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Solution

The fourth proportional to 668,900,128.80, 923,096,799.36 and 367,489,324.56 is: 507,143,300.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,900,128.80 : 923,096,799.36 = 367,489,324.56 : x
  2. Step 2: Convert to fraction form
    668,900,128.80/923,096,799.36 = 367,489,324.56/x
  3. Step 3: Cross multiply
    668,900,128.80x = 923,096,799.36 × 367,489,324.56
  4. Step 4: Simplify right side
    668,900,128.80x = 339,228,219,300,304,256
  5. Step 5: Solve for x
    x = 339,228,219,300,304,256/668,900,128.80
  6. Step 6: Final answer
    x = 507,143,300.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.