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Finding the Fourth Proportional to 643,937.54, 888,675.16 and 372,017.02

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Solution

The fourth proportional to 643,937.54, 888,675.16 and 372,017.02 is: 513,407.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,937.54 : 888,675.16 = 372,017.02 : x
  2. Step 2: Convert to fraction form
    643,937.54/888,675.16 = 372,017.02/x
  3. Step 3: Cross multiply
    643,937.54x = 888,675.16 × 372,017.02
  4. Step 4: Simplify right side
    643,937.54x = 330,602,284,771.22
  5. Step 5: Solve for x
    x = 330,602,284,771.22/643,937.54
  6. Step 6: Final answer
    x = 513,407.38

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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.