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Finding the Fourth Proportional to 404,819.80, 607,229.70 and 393,155.80

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Solution

The fourth proportional to 404,819.80, 607,229.70 and 393,155.80 is: 589,733.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,819.80 : 607,229.70 = 393,155.80 : x
  2. Step 2: Convert to fraction form
    404,819.80/607,229.70 = 393,155.80/x
  3. Step 3: Cross multiply
    404,819.80x = 607,229.70 × 393,155.80
  4. Step 4: Simplify right side
    404,819.80x = 238,735,878,487.26
  5. Step 5: Solve for x
    x = 238,735,878,487.26/404,819.80
  6. Step 6: Final answer
    x = 589,733.70

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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.