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Finding the Fourth Proportional to 710,299.24, 978,220.22 and 664,710.54

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Solution

The fourth proportional to 710,299.24, 978,220.22 and 664,710.54 is: 915,435.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,299.24 : 978,220.22 = 664,710.54 : x
  2. Step 2: Convert to fraction form
    710,299.24/978,220.22 = 664,710.54/x
  3. Step 3: Cross multiply
    710,299.24x = 978,220.22 × 664,710.54
  4. Step 4: Simplify right side
    710,299.24x = 650,233,290,675.12
  5. Step 5: Solve for x
    x = 650,233,290,675.12/710,299.24
  6. Step 6: Final answer
    x = 915,435.71

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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.