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Finding the Fourth Proportional to 675,185.88, 931,990.98 and 388,820.04

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Solution

The fourth proportional to 675,185.88, 931,990.98 and 388,820.04 is: 536,706.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,185.88 : 931,990.98 = 388,820.04 : x
  2. Step 2: Convert to fraction form
    675,185.88/931,990.98 = 388,820.04/x
  3. Step 3: Cross multiply
    675,185.88x = 931,990.98 × 388,820.04
  4. Step 4: Simplify right side
    675,185.88x = 362,376,770,123.24
  5. Step 5: Solve for x
    x = 362,376,770,123.24/675,185.88
  6. Step 6: Final answer
    x = 536,706.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.