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Finding the Fourth Proportional to 561,349.72, 774,662.61 and 306,702.73

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Solution

The fourth proportional to 561,349.72, 774,662.61 and 306,702.73 is: 423,249.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,349.72 : 774,662.61 = 306,702.73 : x
  2. Step 2: Convert to fraction form
    561,349.72/774,662.61 = 306,702.73/x
  3. Step 3: Cross multiply
    561,349.72x = 774,662.61 × 306,702.73
  4. Step 4: Simplify right side
    561,349.72x = 237,591,137,315.93
  5. Step 5: Solve for x
    x = 237,591,137,315.93/561,349.72
  6. Step 6: Final answer
    x = 423,249.77

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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.