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Finding the Fourth Proportional to 636,049.58, 877,741.85 and 345,655.26

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Solution

The fourth proportional to 636,049.58, 877,741.85 and 345,655.26 is: 477,000.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,049.58 : 877,741.85 = 345,655.26 : x
  2. Step 2: Convert to fraction form
    636,049.58/877,741.85 = 345,655.26/x
  3. Step 3: Cross multiply
    636,049.58x = 877,741.85 × 345,655.26
  4. Step 4: Simplify right side
    636,049.58x = 303,396,088,238.77
  5. Step 5: Solve for x
    x = 303,396,088,238.77/636,049.58
  6. Step 6: Final answer
    x = 477,000.69

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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.