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Finding the Fourth Proportional to 647,981.85, 894,197.70 and 361,494.57

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Solution

The fourth proportional to 647,981.85, 894,197.70 and 361,494.57 is: 498,852.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,981.85 : 894,197.70 = 361,494.57 : x
  2. Step 2: Convert to fraction form
    647,981.85/894,197.70 = 361,494.57/x
  3. Step 3: Cross multiply
    647,981.85x = 894,197.70 × 361,494.57
  4. Step 4: Simplify right side
    647,981.85x = 323,247,613,056.49
  5. Step 5: Solve for x
    x = 323,247,613,056.49/647,981.85
  6. Step 6: Final answer
    x = 498,852.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.