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Finding the Fourth Proportional to 662,530.86, 914,193.18 and 372,131.28

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Solution

The fourth proportional to 662,530.86, 914,193.18 and 372,131.28 is: 513,485.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,530.86 : 914,193.18 = 372,131.28 : x
  2. Step 2: Convert to fraction form
    662,530.86/914,193.18 = 372,131.28/x
  3. Step 3: Cross multiply
    662,530.86x = 914,193.18 × 372,131.28
  4. Step 4: Simplify right side
    662,530.86x = 340,199,878,240.67
  5. Step 5: Solve for x
    x = 340,199,878,240.67/662,530.86
  6. Step 6: Final answer
    x = 513,485.33

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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.