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Finding the Fourth Proportional to 561,945.67, 775,484.69 and 307,296.86

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Solution

The fourth proportional to 561,945.67, 775,484.69 and 307,296.86 is: 424,069.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,945.67 : 775,484.69 = 307,296.86 : x
  2. Step 2: Convert to fraction form
    561,945.67/775,484.69 = 307,296.86/x
  3. Step 3: Cross multiply
    561,945.67x = 775,484.69 × 307,296.86
  4. Step 4: Simplify right side
    561,945.67x = 238,304,004,801.17
  5. Step 5: Solve for x
    x = 238,304,004,801.17/561,945.67
  6. Step 6: Final answer
    x = 424,069.48

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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.