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Finding the Fourth Proportional to 613,820.69, 847,115.14 and 372,113.45

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Solution

The fourth proportional to 613,820.69, 847,115.14 and 372,113.45 is: 513,542.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,820.69 : 847,115.14 = 372,113.45 : x
  2. Step 2: Convert to fraction form
    613,820.69/847,115.14 = 372,113.45/x
  3. Step 3: Cross multiply
    613,820.69x = 847,115.14 × 372,113.45
  4. Step 4: Simplify right side
    613,820.69x = 315,222,937,292.63
  5. Step 5: Solve for x
    x = 315,222,937,292.63/613,820.69
  6. Step 6: Final answer
    x = 513,542.38

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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.