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Finding the Fourth Proportional to 493,483.92, 680,969.80 and 278,645.19

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Solution

The fourth proportional to 493,483.92, 680,969.80 and 278,645.19 is: 384,508.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,483.92 : 680,969.80 = 278,645.19 : x
  2. Step 2: Convert to fraction form
    493,483.92/680,969.80 = 278,645.19/x
  3. Step 3: Cross multiply
    493,483.92x = 680,969.80 × 278,645.19
  4. Step 4: Simplify right side
    493,483.92x = 189,748,959,305.26
  5. Step 5: Solve for x
    x = 189,748,959,305.26/493,483.92
  6. Step 6: Final answer
    x = 384,508.90

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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.