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Finding the Fourth Proportional to 613,971.28, 847,055.64 and 372,079.36

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Solution

The fourth proportional to 613,971.28, 847,055.64 and 372,079.36 is: 513,333.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,971.28 : 847,055.64 = 372,079.36 : x
  2. Step 2: Convert to fraction form
    613,971.28/847,055.64 = 372,079.36/x
  3. Step 3: Cross multiply
    613,971.28x = 847,055.64 × 372,079.36
  4. Step 4: Simplify right side
    613,971.28x = 315,171,920,415.59
  5. Step 5: Solve for x
    x = 315,171,920,415.59/613,971.28
  6. Step 6: Final answer
    x = 513,333.33

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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.