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Finding the Fourth Proportional to 709,160.37, 978,507.47 and 422,707.11

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Solution

The fourth proportional to 709,160.37, 978,507.47 and 422,707.11 is: 583,256.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,160.37 : 978,507.47 = 422,707.11 : x
  2. Step 2: Convert to fraction form
    709,160.37/978,507.47 = 422,707.11/x
  3. Step 3: Cross multiply
    709,160.37x = 978,507.47 × 422,707.11
  4. Step 4: Simplify right side
    709,160.37x = 413,622,062,643.58
  5. Step 5: Solve for x
    x = 413,622,062,643.58/709,160.37
  6. Step 6: Final answer
    x = 583,256.03

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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.