Home / 679,428.89-937,702.82-438,412.18

Finding the Fourth Proportional to 679,428.89, 937,702.82 and 438,412.18

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Solution

The fourth proportional to 679,428.89, 937,702.82 and 438,412.18 is: 605,067.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,428.89 : 937,702.82 = 438,412.18 : x
  2. Step 2: Convert to fraction form
    679,428.89/937,702.82 = 438,412.18/x
  3. Step 3: Cross multiply
    679,428.89x = 937,702.82 × 438,412.18
  4. Step 4: Simplify right side
    679,428.89x = 411,100,337,508.35
  5. Step 5: Solve for x
    x = 411,100,337,508.35/679,428.89
  6. Step 6: Final answer
    x = 605,067.50

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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.