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Finding the Fourth Proportional to 489,422.66, 734,104.44 and 291,005.69

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Solution

The fourth proportional to 489,422.66, 734,104.44 and 291,005.69 is: 436,490.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,422.66 : 734,104.44 = 291,005.69 : x
  2. Step 2: Convert to fraction form
    489,422.66/734,104.44 = 291,005.69/x
  3. Step 3: Cross multiply
    489,422.66x = 734,104.44 × 291,005.69
  4. Step 4: Simplify right side
    489,422.66x = 213,628,565,423.74
  5. Step 5: Solve for x
    x = 213,628,565,423.74/489,422.66
  6. Step 6: Final answer
    x = 436,490.96

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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.