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Finding the Fourth Proportional to 671,378.28, 926,474.50 and 384,698.92

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Solution

The fourth proportional to 671,378.28, 926,474.50 and 384,698.92 is: 530,868.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,378.28 : 926,474.50 = 384,698.92 : x
  2. Step 2: Convert to fraction form
    671,378.28/926,474.50 = 384,698.92/x
  3. Step 3: Cross multiply
    671,378.28x = 926,474.50 × 384,698.92
  4. Step 4: Simplify right side
    671,378.28x = 356,413,739,557.54
  5. Step 5: Solve for x
    x = 356,413,739,557.54/671,378.28
  6. Step 6: Final answer
    x = 530,868.74

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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.