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Finding the Fourth Proportional to 493,810.65, 681,514.08 and 278,964.55

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Solution

The fourth proportional to 493,810.65, 681,514.08 and 278,964.55 is: 385,002.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,810.65 : 681,514.08 = 278,964.55 : x
  2. Step 2: Convert to fraction form
    493,810.65/681,514.08 = 278,964.55/x
  3. Step 3: Cross multiply
    493,810.65x = 681,514.08 × 278,964.55
  4. Step 4: Simplify right side
    493,810.65x = 190,118,268,757.03
  5. Step 5: Solve for x
    x = 190,118,268,757.03/493,810.65
  6. Step 6: Final answer
    x = 385,002.37

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1.5x scale

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.