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Finding the Fourth Proportional to 703,954.59, 971,476.46 and 398,076.74

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Solution

The fourth proportional to 703,954.59, 971,476.46 and 398,076.74 is: 549,356.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,954.59 : 971,476.46 = 398,076.74 : x
  2. Step 2: Convert to fraction form
    703,954.59/971,476.46 = 398,076.74/x
  3. Step 3: Cross multiply
    703,954.59x = 971,476.46 × 398,076.74
  4. Step 4: Simplify right side
    703,954.59x = 386,722,178,858.91
  5. Step 5: Solve for x
    x = 386,722,178,858.91/703,954.59
  6. Step 6: Final answer
    x = 549,356.71

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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.