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Finding the Fourth Proportional to 565,011.41, 779,721.44 and 306,890.82

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Solution

The fourth proportional to 565,011.41, 779,721.44 and 306,890.82 is: 423,512.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,011.41 : 779,721.44 = 306,890.82 : x
  2. Step 2: Convert to fraction form
    565,011.41/779,721.44 = 306,890.82/x
  3. Step 3: Cross multiply
    565,011.41x = 779,721.44 × 306,890.82
  4. Step 4: Simplify right side
    565,011.41x = 239,289,350,558.73
  5. Step 5: Solve for x
    x = 239,289,350,558.73/565,011.41
  6. Step 6: Final answer
    x = 423,512.43

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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.