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Finding the Fourth Proportional to 709,458.06, 978,966 and 403,573.26

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Solution

The fourth proportional to 709,458.06, 978,966 and 403,573.26 is: 556,882.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,458.06 : 978,966 = 403,573.26 : x
  2. Step 2: Convert to fraction form
    709,458.06/978,966 = 403,573.26/x
  3. Step 3: Cross multiply
    709,458.06x = 978,966 × 403,573.26
  4. Step 4: Simplify right side
    709,458.06x = 395,084,500,049.16
  5. Step 5: Solve for x
    x = 395,084,500,049.16/709,458.06
  6. Step 6: Final answer
    x = 556,882.11

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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.