Home / 691,965.63-1,038,411.41-287,157.82

Finding the Fourth Proportional to 691,965.63, 1,038,411.41 and 287,157.82

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Solution

The fourth proportional to 691,965.63, 1,038,411.41 and 287,157.82 is: 430,928.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,965.63 : 1,038,411.41 = 287,157.82 : x
  2. Step 2: Convert to fraction form
    691,965.63/1,038,411.41 = 287,157.82/x
  3. Step 3: Cross multiply
    691,965.63x = 1,038,411.41 × 287,157.82
  4. Step 4: Simplify right side
    691,965.63x = 298,187,956,758.73
  5. Step 5: Solve for x
    x = 298,187,956,758.73/691,965.63
  6. Step 6: Final answer
    x = 430,928.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.