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Finding the Fourth Proportional to 621,416, 930,119.04 and 321,483.52

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Solution

The fourth proportional to 621,416, 930,119.04 and 321,483.52 is: 481,188.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,416 : 930,119.04 = 321,483.52 : x
  2. Step 2: Convert to fraction form
    621,416/930,119.04 = 321,483.52/x
  3. Step 3: Cross multiply
    621,416x = 930,119.04 × 321,483.52
  4. Step 4: Simplify right side
    621,416x = 299,017,942,998.22
  5. Step 5: Solve for x
    x = 299,017,942,998.22/621,416
  6. Step 6: Final answer
    x = 481,188.03

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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.