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Finding the Fourth Proportional to 489,368.52, 674,938.98 and 404,337.96

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Solution

The fourth proportional to 489,368.52, 674,938.98 and 404,337.96 is: 557,664.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,368.52 : 674,938.98 = 404,337.96 : x
  2. Step 2: Convert to fraction form
    489,368.52/674,938.98 = 404,337.96/x
  3. Step 3: Cross multiply
    489,368.52x = 674,938.98 × 404,337.96
  4. Step 4: Simplify right side
    489,368.52x = 272,903,450,297.68
  5. Step 5: Solve for x
    x = 272,903,450,297.68/489,368.52
  6. Step 6: Final answer
    x = 557,664.50

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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.