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Finding the Fourth Proportional to 404,628.30, 606,942.45 and 278,657.10

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Solution

The fourth proportional to 404,628.30, 606,942.45 and 278,657.10 is: 417,985.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,628.30 : 606,942.45 = 278,657.10 : x
  2. Step 2: Convert to fraction form
    404,628.30/606,942.45 = 278,657.10/x
  3. Step 3: Cross multiply
    404,628.30x = 606,942.45 × 278,657.10
  4. Step 4: Simplify right side
    404,628.30x = 169,128,822,983.90
  5. Step 5: Solve for x
    x = 169,128,822,983.90/404,628.30
  6. Step 6: Final answer
    x = 417,985.65

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.