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Finding the Fourth Proportional to 489,159.40, 733,739.10 and 445,613.80

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Solution

The fourth proportional to 489,159.40, 733,739.10 and 445,613.80 is: 668,420.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,159.40 : 733,739.10 = 445,613.80 : x
  2. Step 2: Convert to fraction form
    489,159.40/733,739.10 = 445,613.80/x
  3. Step 3: Cross multiply
    489,159.40x = 733,739.10 × 445,613.80
  4. Step 4: Simplify right side
    489,159.40x = 326,964,268,559.58
  5. Step 5: Solve for x
    x = 326,964,268,559.58/489,159.40
  6. Step 6: Final answer
    x = 668,420.70

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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.