Home / 445,991,781.88-615,486,144.72-305,158,395.52

Finding the Fourth Proportional to 445,991,781.88, 615,486,144.72 and 305,158,395.52

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Solution

The fourth proportional to 445,991,781.88, 615,486,144.72 and 305,158,395.52 is: 421,130,549.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,991,781.88 : 615,486,144.72 = 305,158,395.52 : x
  2. Step 2: Convert to fraction form
    445,991,781.88/615,486,144.72 = 305,158,395.52/x
  3. Step 3: Cross multiply
    445,991,781.88x = 615,486,144.72 × 305,158,395.52
  4. Step 4: Simplify right side
    445,991,781.88x = 187,820,764,387,545,728
  5. Step 5: Solve for x
    x = 187,820,764,387,545,728/445,991,781.88
  6. Step 6: Final answer
    x = 421,130,549.98

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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.