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Finding the Fourth Proportional to 709,159.05, 978,598.26 and 403,191.27

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Solution

The fourth proportional to 709,159.05, 978,598.26 and 403,191.27 is: 556,380.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,159.05 : 978,598.26 = 403,191.27 : x
  2. Step 2: Convert to fraction form
    709,159.05/978,598.26 = 403,191.27/x
  3. Step 3: Cross multiply
    709,159.05x = 978,598.26 × 403,191.27
  4. Step 4: Simplify right side
    709,159.05x = 394,562,275,269.19
  5. Step 5: Solve for x
    x = 394,562,275,269.19/709,159.05
  6. Step 6: Final answer
    x = 556,380.51

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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.