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Finding the Fourth Proportional to 548,164.38, 756,472.47 and 306,460.38

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Solution

The fourth proportional to 548,164.38, 756,472.47 and 306,460.38 is: 422,918.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,164.38 : 756,472.47 = 306,460.38 : x
  2. Step 2: Convert to fraction form
    548,164.38/756,472.47 = 306,460.38/x
  3. Step 3: Cross multiply
    548,164.38x = 756,472.47 × 306,460.38
  4. Step 4: Simplify right side
    548,164.38x = 231,828,840,615.74
  5. Step 5: Solve for x
    x = 231,828,840,615.74/548,164.38
  6. Step 6: Final answer
    x = 422,918.47

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Double scale
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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.