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Finding the Fourth Proportional to 712,174.06, 982,866.99 and 425,688

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Solution

The fourth proportional to 712,174.06, 982,866.99 and 425,688 is: 587,489.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,174.06 : 982,866.99 = 425,688 : x
  2. Step 2: Convert to fraction form
    712,174.06/982,866.99 = 425,688/x
  3. Step 3: Cross multiply
    712,174.06x = 982,866.99 × 425,688
  4. Step 4: Simplify right side
    712,174.06x = 418,394,683,239.12
  5. Step 5: Solve for x
    x = 418,394,683,239.12/712,174.06
  6. Step 6: Final answer
    x = 587,489.36

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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.