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Finding the Fourth Proportional to 874,706.20, 1,312,673.70 and 376,427.80

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Solution

The fourth proportional to 874,706.20, 1,312,673.70 and 376,427.80 is: 564,906.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,706.20 : 1,312,673.70 = 376,427.80 : x
  2. Step 2: Convert to fraction form
    874,706.20/1,312,673.70 = 376,427.80/x
  3. Step 3: Cross multiply
    874,706.20x = 1,312,673.70 × 376,427.80
  4. Step 4: Simplify right side
    874,706.20x = 494,126,873,008.86
  5. Step 5: Solve for x
    x = 494,126,873,008.86/874,706.20
  6. Step 6: Final answer
    x = 564,906.11

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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.