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Finding the Fourth Proportional to 613,820.19, 847,114.45 and 372,112.95

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Solution

The fourth proportional to 613,820.19, 847,114.45 and 372,112.95 is: 513,541.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,820.19 : 847,114.45 = 372,112.95 : x
  2. Step 2: Convert to fraction form
    613,820.19/847,114.45 = 372,112.95/x
  3. Step 3: Cross multiply
    613,820.19x = 847,114.45 × 372,112.95
  4. Step 4: Simplify right side
    613,820.19x = 315,222,256,977.13
  5. Step 5: Solve for x
    x = 315,222,256,977.13/613,820.19
  6. Step 6: Final answer
    x = 513,541.69

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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.