Home / 715,345.14-987,173.49-409,420.29

Finding the Fourth Proportional to 715,345.14, 987,173.49 and 409,420.29

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Solution

The fourth proportional to 715,345.14, 987,173.49 and 409,420.29 is: 564,998.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,345.14 : 987,173.49 = 409,420.29 : x
  2. Step 2: Convert to fraction form
    715,345.14/987,173.49 = 409,420.29/x
  3. Step 3: Cross multiply
    715,345.14x = 987,173.49 × 409,420.29
  4. Step 4: Simplify right side
    715,345.14x = 404,168,856,556.11
  5. Step 5: Solve for x
    x = 404,168,856,556.11/715,345.14
  6. Step 6: Final answer
    x = 564,998.40

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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.