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Finding the Fourth Proportional to 561,514.87, 774,891.12 and 306,866.26

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Solution

The fourth proportional to 561,514.87, 774,891.12 and 306,866.26 is: 423,475.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,514.87 : 774,891.12 = 306,866.26 : x
  2. Step 2: Convert to fraction form
    561,514.87/774,891.12 = 306,866.26/x
  3. Step 3: Cross multiply
    561,514.87x = 774,891.12 × 306,866.26
  4. Step 4: Simplify right side
    561,514.87x = 237,787,939,901.61
  5. Step 5: Solve for x
    x = 237,787,939,901.61/561,514.87
  6. Step 6: Final answer
    x = 423,475.77

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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.