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Finding the Fourth Proportional to 642,527.16, 886,692.69 and 356,052.03

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Solution

The fourth proportional to 642,527.16, 886,692.69 and 356,052.03 is: 491,354.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,527.16 : 886,692.69 = 356,052.03 : x
  2. Step 2: Convert to fraction form
    642,527.16/886,692.69 = 356,052.03/x
  3. Step 3: Cross multiply
    642,527.16x = 886,692.69 × 356,052.03
  4. Step 4: Simplify right side
    642,527.16x = 315,708,732,260.66
  5. Step 5: Solve for x
    x = 315,708,732,260.66/642,527.16
  6. Step 6: Final answer
    x = 491,354.69

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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.