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Finding the Fourth Proportional to 874,130.40, 1,310,936.40 and 341,344.80

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Solution

The fourth proportional to 874,130.40, 1,310,936.40 and 341,344.80 is: 511,915.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,130.40 : 1,310,936.40 = 341,344.80 : x
  2. Step 2: Convert to fraction form
    874,130.40/1,310,936.40 = 341,344.80/x
  3. Step 3: Cross multiply
    874,130.40x = 1,310,936.40 × 341,344.80
  4. Step 4: Simplify right side
    874,130.40x = 447,481,323,270.72
  5. Step 5: Solve for x
    x = 447,481,323,270.72/874,130.40
  6. Step 6: Final answer
    x = 511,915.98

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1.5x scale

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.