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Finding the Fourth Proportional to 493,775.92, 681,452.72 and 278,955.40

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Solution

The fourth proportional to 493,775.92, 681,452.72 and 278,955.40 is: 384,982.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,775.92 : 681,452.72 = 278,955.40 : x
  2. Step 2: Convert to fraction form
    493,775.92/681,452.72 = 278,955.40/x
  3. Step 3: Cross multiply
    493,775.92x = 681,452.72 × 278,955.40
  4. Step 4: Simplify right side
    493,775.92x = 190,094,916,088.69
  5. Step 5: Solve for x
    x = 190,094,916,088.69/493,775.92
  6. Step 6: Final answer
    x = 384,982.15

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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.