Home / 687,297,304.62-948,670,144.26-449,178,309.66

Finding the Fourth Proportional to 687,297,304.62, 948,670,144.26 and 449,178,309.66

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Solution

The fourth proportional to 687,297,304.62, 948,670,144.26 and 449,178,309.66 is: 619,996,686.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,297,304.62 : 948,670,144.26 = 449,178,309.66 : x
  2. Step 2: Convert to fraction form
    687,297,304.62/948,670,144.26 = 449,178,309.66/x
  3. Step 3: Cross multiply
    687,297,304.62x = 948,670,144.26 × 449,178,309.66
  4. Step 4: Simplify right side
    687,297,304.62x = 426,122,051,823,615,168
  5. Step 5: Solve for x
    x = 426,122,051,823,615,168/687,297,304.62
  6. Step 6: Final answer
    x = 619,996,686.96

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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.