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Finding the Fourth Proportional to 561,521.10, 774,897.39 and 306,872.29

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Solution

The fourth proportional to 561,521.10, 774,897.39 and 306,872.29 is: 423,482.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,521.10 : 774,897.39 = 306,872.29 : x
  2. Step 2: Convert to fraction form
    561,521.10/774,897.39 = 306,872.29/x
  3. Step 3: Cross multiply
    561,521.10x = 774,897.39 × 306,872.29
  4. Step 4: Simplify right side
    561,521.10x = 237,794,532,709.84
  5. Step 5: Solve for x
    x = 237,794,532,709.84/561,521.10
  6. Step 6: Final answer
    x = 423,482.81

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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.