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Finding the Fourth Proportional to 561,246.92, 774,521.45 and 319,529.49

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Solution

The fourth proportional to 561,246.92, 774,521.45 and 319,529.49 is: 440,951.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,246.92 : 774,521.45 = 319,529.49 : x
  2. Step 2: Convert to fraction form
    561,246.92/774,521.45 = 319,529.49/x
  3. Step 3: Cross multiply
    561,246.92x = 774,521.45 × 319,529.49
  4. Step 4: Simplify right side
    561,246.92x = 247,482,442,314.91
  5. Step 5: Solve for x
    x = 247,482,442,314.91/561,246.92
  6. Step 6: Final answer
    x = 440,951.10

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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.