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Finding the Fourth Proportional to 547,114.74, 755,015.46 and 317,728.44

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Solution

The fourth proportional to 547,114.74, 755,015.46 and 317,728.44 is: 438,463.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,114.74 : 755,015.46 = 317,728.44 : x
  2. Step 2: Convert to fraction form
    547,114.74/755,015.46 = 317,728.44/x
  3. Step 3: Cross multiply
    547,114.74x = 755,015.46 × 317,728.44
  4. Step 4: Simplify right side
    547,114.74x = 239,889,884,281.68
  5. Step 5: Solve for x
    x = 239,889,884,281.68/547,114.74
  6. Step 6: Final answer
    x = 438,463.57

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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.