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Finding the Fourth Proportional to 613,813.82, 847,105.64 and 372,106.58

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Solution

The fourth proportional to 613,813.82, 847,105.64 and 372,106.58 is: 513,532.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,813.82 : 847,105.64 = 372,106.58 : x
  2. Step 2: Convert to fraction form
    613,813.82/847,105.64 = 372,106.58/x
  3. Step 3: Cross multiply
    613,813.82x = 847,105.64 × 372,106.58
  4. Step 4: Simplify right side
    613,813.82x = 315,213,582,599.11
  5. Step 5: Solve for x
    x = 315,213,582,599.11/613,813.82
  6. Step 6: Final answer
    x = 513,532.89

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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.