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Finding the Fourth Proportional to 520,855.23, 718,776.32 and 294,508.83

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Solution

The fourth proportional to 520,855.23, 718,776.32 and 294,508.83 is: 406,419.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,855.23 : 718,776.32 = 294,508.83 : x
  2. Step 2: Convert to fraction form
    520,855.23/718,776.32 = 294,508.83/x
  3. Step 3: Cross multiply
    520,855.23x = 718,776.32 × 294,508.83
  4. Step 4: Simplify right side
    520,855.23x = 211,685,969,441.02
  5. Step 5: Solve for x
    x = 211,685,969,441.02/520,855.23
  6. Step 6: Final answer
    x = 406,419.98

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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.