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Finding the Fourth Proportional to 539,861.80, 808,626.30 and 446,549.80

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Solution

The fourth proportional to 539,861.80, 808,626.30 and 446,549.80 is: 668,859.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,861.80 : 808,626.30 = 446,549.80 : x
  2. Step 2: Convert to fraction form
    539,861.80/808,626.30 = 446,549.80/x
  3. Step 3: Cross multiply
    539,861.80x = 808,626.30 × 446,549.80
  4. Step 4: Simplify right side
    539,861.80x = 361,091,912,539.74
  5. Step 5: Solve for x
    x = 361,091,912,539.74/539,861.80
  6. Step 6: Final answer
    x = 668,859.91

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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.