Home / 715,926.16-987,951.54-393,617.08

Finding the Fourth Proportional to 715,926.16, 987,951.54 and 393,617.08

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Solution

The fourth proportional to 715,926.16, 987,951.54 and 393,617.08 is: 543,176.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,926.16 : 987,951.54 = 393,617.08 : x
  2. Step 2: Convert to fraction form
    715,926.16/987,951.54 = 393,617.08/x
  3. Step 3: Cross multiply
    715,926.16x = 987,951.54 × 393,617.08
  4. Step 4: Simplify right side
    715,926.16x = 388,874,600,356.30
  5. Step 5: Solve for x
    x = 388,874,600,356.30/715,926.16
  6. Step 6: Final answer
    x = 543,176.97

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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.