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Finding the Fourth Proportional to 561,034.76, 774,230.81 and 306,385.94

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Solution

The fourth proportional to 561,034.76, 774,230.81 and 306,385.94 is: 422,814.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,034.76 : 774,230.81 = 306,385.94 : x
  2. Step 2: Convert to fraction form
    561,034.76/774,230.81 = 306,385.94/x
  3. Step 3: Cross multiply
    561,034.76x = 774,230.81 × 306,385.94
  4. Step 4: Simplify right side
    561,034.76x = 237,213,434,902.46
  5. Step 5: Solve for x
    x = 237,213,434,902.46/561,034.76
  6. Step 6: Final answer
    x = 422,814.15

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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.