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Finding the Fourth Proportional to 547,513.83, 755,561.05 and 305,799.75

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Solution

The fourth proportional to 547,513.83, 755,561.05 and 305,799.75 is: 421,999.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,513.83 : 755,561.05 = 305,799.75 : x
  2. Step 2: Convert to fraction form
    547,513.83/755,561.05 = 305,799.75/x
  3. Step 3: Cross multiply
    547,513.83x = 755,561.05 × 305,799.75
  4. Step 4: Simplify right side
    547,513.83x = 231,050,378,670.74
  5. Step 5: Solve for x
    x = 231,050,378,670.74/547,513.83
  6. Step 6: Final answer
    x = 421,999.17

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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.