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Finding the Fourth Proportional to 619,809.42, 930,212.28 and 320,377.71

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Solution

The fourth proportional to 619,809.42, 930,212.28 and 320,377.71 is: 480,824.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,809.42 : 930,212.28 = 320,377.71 : x
  2. Step 2: Convert to fraction form
    619,809.42/930,212.28 = 320,377.71/x
  3. Step 3: Cross multiply
    619,809.42x = 930,212.28 × 320,377.71
  4. Step 4: Simplify right side
    619,809.42x = 298,019,280,080.28
  5. Step 5: Solve for x
    x = 298,019,280,080.28/619,809.42
  6. Step 6: Final answer
    x = 480,824.06

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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.