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Finding the Fourth Proportional to 561,651.20, 840,727.20 and 404,187.20

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Solution

The fourth proportional to 561,651.20, 840,727.20 and 404,187.20 is: 605,021.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,651.20 : 840,727.20 = 404,187.20 : x
  2. Step 2: Convert to fraction form
    561,651.20/840,727.20 = 404,187.20/x
  3. Step 3: Cross multiply
    561,651.20x = 840,727.20 × 404,187.20
  4. Step 4: Simplify right side
    561,651.20x = 339,811,172,931.84
  5. Step 5: Solve for x
    x = 339,811,172,931.84/561,651.20
  6. Step 6: Final answer
    x = 605,021.72

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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.