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Finding the Fourth Proportional to 479,779.63, 719,918.51 and 195,678.61

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Solution

The fourth proportional to 479,779.63, 719,918.51 and 195,678.61 is: 293,619.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,779.63 : 719,918.51 = 195,678.61 : x
  2. Step 2: Convert to fraction form
    479,779.63/719,918.51 = 195,678.61/x
  3. Step 3: Cross multiply
    479,779.63x = 719,918.51 × 195,678.61
  4. Step 4: Simplify right side
    479,779.63x = 140,872,653,839.27
  5. Step 5: Solve for x
    x = 140,872,653,839.27/479,779.63
  6. Step 6: Final answer
    x = 293,619.50

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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.