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Finding the Fourth Proportional to 561,499.15, 774,869.19 and 306,850.36

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Solution

The fourth proportional to 561,499.15, 774,869.19 and 306,850.36 is: 423,453.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,499.15 : 774,869.19 = 306,850.36 : x
  2. Step 2: Convert to fraction form
    561,499.15/774,869.19 = 306,850.36/x
  3. Step 3: Cross multiply
    561,499.15x = 774,869.19 × 306,850.36
  4. Step 4: Simplify right side
    561,499.15x = 237,768,889,904.41
  5. Step 5: Solve for x
    x = 237,768,889,904.41/561,499.15
  6. Step 6: Final answer
    x = 423,453.70

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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.