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Finding the Fourth Proportional to 489,743.60, 733,837.80 and 410,428.40

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Solution

The fourth proportional to 489,743.60, 733,837.80 and 410,428.40 is: 614,990.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,743.60 : 733,837.80 = 410,428.40 : x
  2. Step 2: Convert to fraction form
    489,743.60/733,837.80 = 410,428.40/x
  3. Step 3: Cross multiply
    489,743.60x = 733,837.80 × 410,428.40
  4. Step 4: Simplify right side
    489,743.60x = 301,187,874,113.52
  5. Step 5: Solve for x
    x = 301,187,874,113.52/489,743.60
  6. Step 6: Final answer
    x = 614,990.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.