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Finding the Fourth Proportional to 493,632.72, 681,201.36 and 278,765.64

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Solution

The fourth proportional to 493,632.72, 681,201.36 and 278,765.64 is: 384,689.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,632.72 : 681,201.36 = 278,765.64 : x
  2. Step 2: Convert to fraction form
    493,632.72/681,201.36 = 278,765.64/x
  3. Step 3: Cross multiply
    493,632.72x = 681,201.36 × 278,765.64
  4. Step 4: Simplify right side
    493,632.72x = 189,895,533,089.27
  5. Step 5: Solve for x
    x = 189,895,533,089.27/493,632.72
  6. Step 6: Final answer
    x = 384,689.92

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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.