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Finding the Fourth Proportional to 715,832.46, 987,851.16 and 393,548.04

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Solution

The fourth proportional to 715,832.46, 987,851.16 and 393,548.04 is: 543,097.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,832.46 : 987,851.16 = 393,548.04 : x
  2. Step 2: Convert to fraction form
    715,832.46/987,851.16 = 393,548.04/x
  3. Step 3: Cross multiply
    715,832.46x = 987,851.16 × 393,548.04
  4. Step 4: Simplify right side
    715,832.46x = 388,766,887,829.73
  5. Step 5: Solve for x
    x = 388,766,887,829.73/715,832.46
  6. Step 6: Final answer
    x = 543,097.60

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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.