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Finding the Fourth Proportional to 561,479.94, 774,859.23 and 306,835.38

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Solution

The fourth proportional to 561,479.94, 774,859.23 and 306,835.38 is: 423,442.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,479.94 : 774,859.23 = 306,835.38 : x
  2. Step 2: Convert to fraction form
    561,479.94/774,859.23 = 306,835.38/x
  3. Step 3: Cross multiply
    561,479.94x = 774,859.23 × 306,835.38
  4. Step 4: Simplify right side
    561,479.94x = 237,754,226,283.56
  5. Step 5: Solve for x
    x = 237,754,226,283.56/561,479.94
  6. Step 6: Final answer
    x = 423,442.07

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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.