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Finding the Fourth Proportional to 874,951.80, 1,312,626.95 and 306,360.96

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Solution

The fourth proportional to 874,951.80, 1,312,626.95 and 306,360.96 is: 459,611.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,951.80 : 1,312,626.95 = 306,360.96 : x
  2. Step 2: Convert to fraction form
    874,951.80/1,312,626.95 = 306,360.96/x
  3. Step 3: Cross multiply
    874,951.80x = 1,312,626.95 × 306,360.96
  4. Step 4: Simplify right side
    874,951.80x = 402,137,652,523.87
  5. Step 5: Solve for x
    x = 402,137,652,523.87/874,951.80
  6. Step 6: Final answer
    x = 459,611.21

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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.