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Finding the Fourth Proportional to 634,790.66, 875,947.30 and 380,135.30

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Solution

The fourth proportional to 634,790.66, 875,947.30 and 380,135.30 is: 524,548.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,790.66 : 875,947.30 = 380,135.30 : x
  2. Step 2: Convert to fraction form
    634,790.66/875,947.30 = 380,135.30/x
  3. Step 3: Cross multiply
    634,790.66x = 875,947.30 × 380,135.30
  4. Step 4: Simplify right side
    634,790.66x = 332,978,484,339.62
  5. Step 5: Solve for x
    x = 332,978,484,339.62/634,790.66
  6. Step 6: Final answer
    x = 524,548.50

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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.