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Finding the Fourth Proportional to 535,564.40, 739,078.81 and 306,126.59

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Solution

The fourth proportional to 535,564.40, 739,078.81 and 306,126.59 is: 422,454.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,564.40 : 739,078.81 = 306,126.59 : x
  2. Step 2: Convert to fraction form
    535,564.40/739,078.81 = 306,126.59/x
  3. Step 3: Cross multiply
    535,564.40x = 739,078.81 × 306,126.59
  4. Step 4: Simplify right side
    535,564.40x = 226,251,675,846.56
  5. Step 5: Solve for x
    x = 226,251,675,846.56/535,564.40
  6. Step 6: Final answer
    x = 422,454.66

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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.