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Finding the Fourth Proportional to 489,457.83, 734,157.12 and 291,040.89

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Solution

The fourth proportional to 489,457.83, 734,157.12 and 291,040.89 is: 436,543.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,457.83 : 734,157.12 = 291,040.89 : x
  2. Step 2: Convert to fraction form
    489,457.83/734,157.12 = 291,040.89/x
  3. Step 3: Cross multiply
    489,457.83x = 734,157.12 × 291,040.89
  4. Step 4: Simplify right side
    489,457.83x = 213,669,741,604.64
  5. Step 5: Solve for x
    x = 213,669,741,604.64/489,457.83
  6. Step 6: Final answer
    x = 436,543.72

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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.