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Finding the Fourth Proportional to 874,705.20, 1,312,672.20 and 376,426.80

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Solution

The fourth proportional to 874,705.20, 1,312,672.20 and 376,426.80 is: 564,904.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,705.20 : 1,312,672.20 = 376,426.80 : x
  2. Step 2: Convert to fraction form
    874,705.20/1,312,672.20 = 376,426.80/x
  3. Step 3: Cross multiply
    874,705.20x = 1,312,672.20 × 376,426.80
  4. Step 4: Simplify right side
    874,705.20x = 494,124,995,694.96
  5. Step 5: Solve for x
    x = 494,124,995,694.96/874,705.20
  6. Step 6: Final answer
    x = 564,904.61

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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.