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Finding the Fourth Proportional to 709,273.96, 978,793.08 and 403,350.16

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Solution

The fourth proportional to 709,273.96, 978,793.08 and 403,350.16 is: 556,620.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,273.96 : 978,793.08 = 403,350.16 : x
  2. Step 2: Convert to fraction form
    709,273.96/978,793.08 = 403,350.16/x
  3. Step 3: Cross multiply
    709,273.96x = 978,793.08 × 403,350.16
  4. Step 4: Simplify right side
    709,273.96x = 394,796,345,424.89
  5. Step 5: Solve for x
    x = 394,796,345,424.89/709,273.96
  6. Step 6: Final answer
    x = 556,620.39

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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.