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Finding the Fourth Proportional to 422,426.60, 634,331.10 and 282,804.20

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Solution

The fourth proportional to 422,426.60, 634,331.10 and 282,804.20 is: 424,669.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,426.60 : 634,331.10 = 282,804.20 : x
  2. Step 2: Convert to fraction form
    422,426.60/634,331.10 = 282,804.20/x
  3. Step 3: Cross multiply
    422,426.60x = 634,331.10 × 282,804.20
  4. Step 4: Simplify right side
    422,426.60x = 179,391,499,270.62
  5. Step 5: Solve for x
    x = 179,391,499,270.62/422,426.60
  6. Step 6: Final answer
    x = 424,669.04

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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.