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Finding the Fourth Proportional to 404,316.40, 606,474.60 and 378,072.40

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Solution

The fourth proportional to 404,316.40, 606,474.60 and 378,072.40 is: 567,108.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,316.40 : 606,474.60 = 378,072.40 : x
  2. Step 2: Convert to fraction form
    404,316.40/606,474.60 = 378,072.40/x
  3. Step 3: Cross multiply
    404,316.40x = 606,474.60 × 378,072.40
  4. Step 4: Simplify right side
    404,316.40x = 229,291,307,561.04
  5. Step 5: Solve for x
    x = 229,291,307,561.04/404,316.40
  6. Step 6: Final answer
    x = 567,108.60

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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.