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Finding the Fourth Proportional to 423,034.80, 634,552.20 and 404,372.40

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Solution

The fourth proportional to 423,034.80, 634,552.20 and 404,372.40 is: 606,558.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,034.80 : 634,552.20 = 404,372.40 : x
  2. Step 2: Convert to fraction form
    423,034.80/634,552.20 = 404,372.40/x
  3. Step 3: Cross multiply
    423,034.80x = 634,552.20 × 404,372.40
  4. Step 4: Simplify right side
    423,034.80x = 256,595,396,039.28
  5. Step 5: Solve for x
    x = 256,595,396,039.28/423,034.80
  6. Step 6: Final answer
    x = 606,558.60

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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.