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Finding the Fourth Proportional to 472,917.60, 709,376.40 and 447,256.80

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Solution

The fourth proportional to 472,917.60, 709,376.40 and 447,256.80 is: 670,885.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,917.60 : 709,376.40 = 447,256.80 : x
  2. Step 2: Convert to fraction form
    472,917.60/709,376.40 = 447,256.80/x
  3. Step 3: Cross multiply
    472,917.60x = 709,376.40 × 447,256.80
  4. Step 4: Simplify right side
    472,917.60x = 317,273,418,659.52
  5. Step 5: Solve for x
    x = 317,273,418,659.52/472,917.60
  6. Step 6: Final answer
    x = 670,885.20

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Similar ratio
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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.