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Finding the Fourth Proportional to 404,428.20, 606,642.30 and 374,015.40

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Solution

The fourth proportional to 404,428.20, 606,642.30 and 374,015.40 is: 561,023.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,428.20 : 606,642.30 = 374,015.40 : x
  2. Step 2: Convert to fraction form
    404,428.20/606,642.30 = 374,015.40/x
  3. Step 3: Cross multiply
    404,428.20x = 606,642.30 × 374,015.40
  4. Step 4: Simplify right side
    404,428.20x = 226,893,562,491.42
  5. Step 5: Solve for x
    x = 226,893,562,491.42/404,428.20
  6. Step 6: Final answer
    x = 561,023.10

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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.