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Finding the Fourth Proportional to 709,417.02, 978,852.06 and 451,396.38

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Solution

The fourth proportional to 709,417.02, 978,852.06 and 451,396.38 is: 622,835.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,417.02 : 978,852.06 = 451,396.38 : x
  2. Step 2: Convert to fraction form
    709,417.02/978,852.06 = 451,396.38/x
  3. Step 3: Cross multiply
    709,417.02x = 978,852.06 × 451,396.38
  4. Step 4: Simplify right side
    709,417.02x = 441,850,276,439.54
  5. Step 5: Solve for x
    x = 441,850,276,439.54/709,417.02
  6. Step 6: Final answer
    x = 622,835.74

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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.