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Finding the Fourth Proportional to 429,770.02, 643,605 and 370,983.46

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Solution

The fourth proportional to 429,770.02, 643,605 and 370,983.46 is: 555,568.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,770.02 : 643,605 = 370,983.46 : x
  2. Step 2: Convert to fraction form
    429,770.02/643,605 = 370,983.46/x
  3. Step 3: Cross multiply
    429,770.02x = 643,605 × 370,983.46
  4. Step 4: Simplify right side
    429,770.02x = 238,766,809,773.30
  5. Step 5: Solve for x
    x = 238,766,809,773.30/429,770.02
  6. Step 6: Final answer
    x = 555,568.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.