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Finding the Fourth Proportional to 662,436, 914,161.86 and 360,630

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Solution

The fourth proportional to 662,436, 914,161.86 and 360,630 is: 497,669.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,436 : 914,161.86 = 360,630 : x
  2. Step 2: Convert to fraction form
    662,436/914,161.86 = 360,630/x
  3. Step 3: Cross multiply
    662,436x = 914,161.86 × 360,630
  4. Step 4: Simplify right side
    662,436x = 329,674,191,571.80
  5. Step 5: Solve for x
    x = 329,674,191,571.80/662,436
  6. Step 6: Final answer
    x = 497,669.50

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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.