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Finding the Fourth Proportional to 931,393, 1,397,102.46 and 266,545

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Solution

The fourth proportional to 931,393, 1,397,102.46 and 266,545 is: 399,821.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,393 : 1,397,102.46 = 266,545 : x
  2. Step 2: Convert to fraction form
    931,393/1,397,102.46 = 266,545/x
  3. Step 3: Cross multiply
    931,393x = 1,397,102.46 × 266,545
  4. Step 4: Simplify right side
    931,393x = 372,390,675,200.70
  5. Step 5: Solve for x
    x = 372,390,675,200.70/931,393
  6. Step 6: Final answer
    x = 399,821.21

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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.