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Finding the Fourth Proportional to 493,326.72, 680,788.80 and 278,464.32

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Solution

The fourth proportional to 493,326.72, 680,788.80 and 278,464.32 is: 384,279.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,326.72 : 680,788.80 = 278,464.32 : x
  2. Step 2: Convert to fraction form
    493,326.72/680,788.80 = 278,464.32/x
  3. Step 3: Cross multiply
    493,326.72x = 680,788.80 × 278,464.32
  4. Step 4: Simplify right side
    493,326.72x = 189,575,390,255.62
  5. Step 5: Solve for x
    x = 189,575,390,255.62/493,326.72
  6. Step 6: Final answer
    x = 384,279.59

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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.