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Finding the Fourth Proportional to 486,370.56, 669,705.58 and 440,751.80

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Solution

The fourth proportional to 486,370.56, 669,705.58 and 440,751.80 is: 606,891.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,370.56 : 669,705.58 = 440,751.80 : x
  2. Step 2: Convert to fraction form
    486,370.56/669,705.58 = 440,751.80/x
  3. Step 3: Cross multiply
    486,370.56x = 669,705.58 × 440,751.80
  4. Step 4: Simplify right side
    486,370.56x = 295,173,939,855.04
  5. Step 5: Solve for x
    x = 295,173,939,855.04/486,370.56
  6. Step 6: Final answer
    x = 606,891.05

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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.