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Finding the Fourth Proportional to 613,819.25, 847,113.15 and 372,112.01

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Solution

The fourth proportional to 613,819.25, 847,113.15 and 372,112.01 is: 513,540.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,819.25 : 847,113.15 = 372,112.01 : x
  2. Step 2: Convert to fraction form
    613,819.25/847,113.15 = 372,112.01/x
  3. Step 3: Cross multiply
    613,819.25x = 847,113.15 × 372,112.01
  4. Step 4: Simplify right side
    613,819.25x = 315,220,977,280.46
  5. Step 5: Solve for x
    x = 315,220,977,280.46/613,819.25
  6. Step 6: Final answer
    x = 513,540.39

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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.