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Finding the Fourth Proportional to 479,779.68, 718,753.68 and 268,779.36

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Solution

The fourth proportional to 479,779.68, 718,753.68 and 268,779.36 is: 402,655.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,779.68 : 718,753.68 = 268,779.36 : x
  2. Step 2: Convert to fraction form
    479,779.68/718,753.68 = 268,779.36/x
  3. Step 3: Cross multiply
    479,779.68x = 718,753.68 × 268,779.36
  4. Step 4: Simplify right side
    479,779.68x = 193,186,154,108.05
  5. Step 5: Solve for x
    x = 193,186,154,108.05/479,779.68
  6. Step 6: Final answer
    x = 402,655.97

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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.