Home / 715,454.04-987,262.38-393,160.44

Finding the Fourth Proportional to 715,454.04, 987,262.38 and 393,160.44

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Solution

The fourth proportional to 715,454.04, 987,262.38 and 393,160.44 is: 542,526.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,454.04 : 987,262.38 = 393,160.44 : x
  2. Step 2: Convert to fraction form
    715,454.04/987,262.38 = 393,160.44/x
  3. Step 3: Cross multiply
    715,454.04x = 987,262.38 × 393,160.44
  4. Step 4: Simplify right side
    715,454.04x = 388,152,511,716.25
  5. Step 5: Solve for x
    x = 388,152,511,716.25/715,454.04
  6. Step 6: Final answer
    x = 542,526.13

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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.