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Finding the Fourth Proportional to 489,365.40, 734,048.14 and 414,715.80

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Solution

The fourth proportional to 489,365.40, 734,048.14 and 414,715.80 is: 622,073.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,365.40 : 734,048.14 = 414,715.80 : x
  2. Step 2: Convert to fraction form
    489,365.40/734,048.14 = 414,715.80/x
  3. Step 3: Cross multiply
    489,365.40x = 734,048.14 × 414,715.80
  4. Step 4: Simplify right side
    489,365.40x = 304,421,361,618.61
  5. Step 5: Solve for x
    x = 304,421,361,618.61/489,365.40
  6. Step 6: Final answer
    x = 622,073.73

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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.