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Finding the Fourth Proportional to 561,348.72, 774,661.23 and 306,701.73

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Solution

The fourth proportional to 561,348.72, 774,661.23 and 306,701.73 is: 423,248.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,348.72 : 774,661.23 = 306,701.73 : x
  2. Step 2: Convert to fraction form
    561,348.72/774,661.23 = 306,701.73/x
  3. Step 3: Cross multiply
    561,348.72x = 774,661.23 × 306,701.73
  4. Step 4: Simplify right side
    561,348.72x = 237,589,939,404.93
  5. Step 5: Solve for x
    x = 237,589,939,404.93/561,348.72
  6. Step 6: Final answer
    x = 423,248.39

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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.